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cfn-lint

1.57.113M downloads/moaws-cloudformation/cfn-lint ↗New releases in your daily digest, changelog included.

Checks CloudFormation templates for practices and behaviour that could potentially be improved

Last release 6 days ago
29 Sep 2026
Ships on a steady schedule
a new release about every 9 days
Nearly every release is documented
notes for 60 of the last 60 stable releases
Nothing withdrawn
no release was ever pulled
8 years old
458 releases · first in 2018

Release timeline

458 releases since 2018

2018202020222024

Releases

1.57.129 Sept 2026
chore(deps-dev): update coverage requirement from >=7.2.1 to >=7.16.1 in /requirements by @dependabot [bot] in #4720
What's Changed

chore(deps-dev): update coverage requirement from >=7.2.1 to >=7.16.1 in /requirements by @dependabot[bot] in #4720

Update CloudFormation schemas to 2026-09-28 by @github-actions[bot] in #4716

update W1101: Report every YAML alias, including scalars by @esetnik in #4724

New Contributors

@esetnik made their first contribution in #4724

Full Changelog: v1.57.0...v1.57.1
Open source →
Additional notes2 sources agree
What's Changed

chore(deps-dev): update coverage requirement from >=7.2.1 to >=7.16.1 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4720

Update CloudFormation schemas to 2026-09-28 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4716

update W1101: Report every YAML alias, including scalars by @esetnik in https://github.com/aws-cloudformation/cfn-lint/pull/4724

New Contributors

@esetnik made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4724

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.57.0...v1.57.1

One column per quarter.

1.57.017 Sept 2026

fix: Require ProvisionedThroughput when DynamoDB BillingMode is omitted by @kddejong in #4702

What's Changed

fix: Require ProvisionedThroughput when DynamoDB BillingMode is omitted by @kddejong in #4702
fix E3700: Skip first-stage check for conditional stage entries by @kddejong in #4701
fix: Escape hyphen in SSM dynamic reference pattern by @kddejong in #4700
add E3725: FSx FileSystemType-specific StorageCapacity by @kddejong in #4708
docs: Refresh stale .kiro steering and prompts by @kddejong in #4710
fix: reject Fn::Select lifecycle policies without transform by @0xTaoZ in #4704
chore(deps): bump pyinstaller from 6.22.2 to 6.22.3 in /requirements by @dependabot[bot] in #4713
refactor: simplify Fn::Select lifecycle policy error metadata by @kddejong in #4711
fix: resolve every index Fn::Select can take by @ashvinctrl in #4705
Update CloudFormation schemas to 2026-09-17 by @github-actions[bot] in #4703
feat: Add metadata context validation rules (I4010, I4011, I4012) by @chrisqm-dev in #4655
add I4010: Template or architecture-relevant resource has no Context block by @chrisqm-dev in #4708
add W4011: Context block has no 'why' by @chrisqm-dev in #4708
add W4012: Context field does not match the schema by @chrisqm-dev in #4708

New Contributors

@ashvinctrl made their first contribution in #4705

Full Changelog: v1.56.3...v1.57.0

Open source →

Additional notes2 sources agree

What's Changed

fix: Require ProvisionedThroughput when DynamoDB BillingMode is omitted by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4702
fix E3700: Skip first-stage check for conditional stage entries by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4701
fix: Escape hyphen in SSM dynamic reference pattern by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4700
add E3725: FSx FileSystemType-specific StorageCapacity by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4708
docs: Refresh stale .kiro steering and prompts by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4710
fix: reject Fn::Select lifecycle policies without transform by @0xTaoZ in https://github.com/aws-cloudformation/cfn-lint/pull/4704
chore(deps): bump pyinstaller from 6.22.2 to 6.22.3 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4713
refactor: simplify Fn::Select lifecycle policy error metadata by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4711
fix: resolve every index Fn::Select can take by @ashvinctrl in https://github.com/aws-cloudformation/cfn-lint/pull/4705
Update CloudFormation schemas to 2026-09-17 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4703
feat: Add metadata context validation rules (I4010, I4011, I4012) by @chrisqm-dev in https://github.com/aws-cloudformation/cfn-lint/pull/4655
add I4010: Template or architecture-relevant resource has no Context block by @chrisqm-dev in https://github.com/aws-cloudformation/cfn-lint/pull/4708
add W4011: Context block has no 'why' by @chrisqm-dev in https://github.com/aws-cloudformation/cfn-lint/pull/4708
add W4012: Context field does not match the schema by @chrisqm-dev in https://github.com/aws-cloudformation/cfn-lint/pull/4708

New Contributors

@ashvinctrl made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4705

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.56.3...v1.57.0

1.56.310 Sept 2026

fix W1028 : scope to enclosing Fn::If pins by @kddejong in #4690

What's Changed

fix W1028: scope to enclosing Fn::If pins by @kddejong in #4690
fix E1017: report out-of-bounds Fn::Select on a literal list by @kddejong in #4695
fix E1010: report clean error for Fn::GetAtt string form without an attribute by @kddejong in #4696
Update CloudFormation schemas to 2026-09-10 by @github-actions[bot] in #4691
fix W1101: resolved Fn::FindInMap should not share identity (W1101 false positive) by @kddejong in #4698

Full Changelog: v1.56.2...v1.56.3

Open source →

Additional notes2 sources agree

What's Changed

fix W1028: scope to enclosing Fn::If pins by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4690
fix E1017: report out-of-bounds Fn::Select on a literal list by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4695
fix E1010: report clean error for Fn::GetAtt string form without an attribute by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4696
Update CloudFormation schemas to 2026-09-10 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4691
fix W1101: resolved Fn::FindInMap should not share identity (W1101 false positive) by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4698

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.56.2...v1.56.3

Open source →

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Release v1.56.3 Latest

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1.56.29 Sept 2026

fix: Allow intrinsics in SAM Globals properties by @kddejong in #4683

What's Changed

fix: Allow intrinsics in SAM Globals properties by @kddejong in #4683
add E3717: Lambda Timeout limit based on CapacityProviderConfig by @kddejong in #4685
fix E2529: Raise CloudWatch Logs subscription filter limit to 5 by @kddejong in #4688
Avoid maxProperties warnings for single-property schemas by @0xTaoZ in #4686
Allow Fn::GetAZs in Fn::Join values by @0xTaoZ in #4677

Full Changelog: v1.56.1...v1.56.2

Open source →

Additional notes2 sources agree

What's Changed

fix: Allow intrinsics in SAM Globals properties by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4683
add E3717: Lambda Timeout limit based on CapacityProviderConfig by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4685
fix E2529: Raise CloudWatch Logs subscription filter limit to 5 by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4688
Avoid maxProperties warnings for single-property schemas by @0xTaoZ in https://github.com/aws-cloudformation/cfn-lint/pull/4686
Allow Fn::GetAZs in Fn::Join values by @0xTaoZ in https://github.com/aws-cloudformation/cfn-lint/pull/4677

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.56.1...v1.56.2

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Release v1.56.2

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1.56.18 Sept 2026

fix(ecs): Support 32 vCPU Fargate task definitions by @kddejong in #4668

What's Changed

fix(ecs): Support 32 vCPU Fargate task definitions by @kddejong in #4668
Guard against YAML alias amplification (billion laughs) by @kddejong in #4670
fix: Type-check resource Refs in UpdatePolicy/CreationPolicy by @kddejong in #4676
Update CloudFormation schemas to 2026-09-08 by @github-actions[bot] in #4667

Full Changelog: v1.56.0...v1.56.1

Open source →

Additional notes2 sources agree

What's Changed

fix(ecs): Support 32 vCPU Fargate task definitions by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4668
Guard against YAML alias amplification (billion laughs) by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4670
fix: Type-check resource Refs in UpdatePolicy/CreationPolicy by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4676
Update CloudFormation schemas to 2026-09-08 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4667

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.56.0...v1.56.1

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1.56.031 Aug 2026

test(functions): assert FindInMap rejects non-DefaultValue 4th item without transform by @kddejong in #4639

What's Changed

test(functions): assert FindInMap rejects non-DefaultValue 4th item without transform by @kddejong in #4639
fix: Prevent path traversal in nested stack TemplateURL resolution by @kddejong in #4640
fix: Require object for CreationPolicy and UpdatePolicy by @kddejong in #4641
Fix E1010 resolve GetAtt to SAM generated resources by @kddejong in #4646
chore(deps): bump pyinstaller from 6.21.0 to 6.22.1 in /requirements by @dependabot[bot] in #4647
docs: add inspect.software health badge by @Nayjest in #4648
Add AutoScalingInstanceRefresh to the UpdatePolicy schema by @ktrysmt in #4656
chore(deps): bump pyinstaller from 6.22.1 to 6.22.2 in /requirements by @dependabot[bot] in #4650
Update CloudFormation schemas to 2026-08-28 by @github-actions[bot] in #4637
Fix E3016: Reject AutoScalingInstanceRefresh with AutoScalingRollingUpdate by @kddejong in #4661
fix: Defer schema metadata updates until install succeeds by @Fail-Safe in #4662
chore: Remove unused caching path from get_url_retrieve by @kddejong in #4663
Allow GetAtt outputs on SAM applications by @0xTaoZ in #4665
Update CloudFormation schemas to 2026-08-31 by @github-actions[bot] in #4664

New Contributors

@Nayjest made their first contribution in #4648
@ktrysmt made their first contribution in #4656
@Fail-Safe made their first contribution in #4662

Full Changelog: v1.55.1...v1.56.0

Open source →

Additional notes2 sources agree

What's Changed

test(functions): assert FindInMap rejects non-DefaultValue 4th item without transform by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4639
fix: Prevent path traversal in nested stack TemplateURL resolution by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4640
fix: Require object for CreationPolicy and UpdatePolicy by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4641
Fix E1010 resolve GetAtt to SAM generated resources by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4646
chore(deps): bump pyinstaller from 6.21.0 to 6.22.1 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4647
docs: add inspect.software health badge by @Nayjest in https://github.com/aws-cloudformation/cfn-lint/pull/4648
Add AutoScalingInstanceRefresh to the UpdatePolicy schema by @ktrysmt in https://github.com/aws-cloudformation/cfn-lint/pull/4656
chore(deps): bump pyinstaller from 6.22.1 to 6.22.2 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4650
Update CloudFormation schemas to 2026-08-28 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4637
Fix E3016: Reject AutoScalingInstanceRefresh with AutoScalingRollingUpdate by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4661
fix: Defer schema metadata updates until install succeeds by @Fail-Safe in https://github.com/aws-cloudformation/cfn-lint/pull/4662
chore: Remove unused caching path from get_url_retrieve by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4663
Allow GetAtt outputs on SAM applications by @0xTaoZ in https://github.com/aws-cloudformation/cfn-lint/pull/4665
Update CloudFormation schemas to 2026-08-31 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4664

New Contributors

@Nayjest made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4648
@ktrysmt made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4656
@Fail-Safe made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4662

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.55.1...v1.56.0

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Release v1.56.0

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1.55.113 Aug 20263 sources agree

chore(deps): bump setuptools from 83.0.0 to 84.0.0 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4630

What's Changed

chore(deps): bump setuptools from 83.0.0 to 84.0.0 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4630
E3005: skip DependsOn validation for SAM/MODULE sub-resources by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4632
fix(functions): allow FindInMap DefaultValue without transform by @0xTaoZ in https://github.com/aws-cloudformation/cfn-lint/pull/4628
fix(schema): retry transient network errors when downloading schemas by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4633
Update CloudFormation schemas to 2026-08-13 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4626

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.55.0...v1.55.1

Open source →

Additional notes

What's Changed

chore(deps): bump setuptools from 83.0.0 to 84.0.0 in /requirements by @dependabot[bot] in #4630
E3005: skip DependsOn validation for SAM/MODULE sub-resources by @kddejong in #4632
fix(functions): allow FindInMap DefaultValue without transform by @0xTaoZ in #4628
fix(schema): retry transient network errors when downloading schemas by @kddejong in #4633
Update CloudFormation schemas to 2026-08-13 by @github-actions[bot] in #4626

Full Changelog: v1.55.0...v1.55.1

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1.55.011 Aug 20263 sources agree

Update E3043 for Serverless::Application by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4617

What's Changed

Update E3043 for Serverless::Application by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4617
Update W2533 Handler/Runtime on Zip Serverless::Function by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4618
Update W2530 SnapStart support for Serverless::Function by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4616
Update E3724 to validate IgnoreGlobals keys by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4615
Update E2529 count SAM CloudWatchLogs events by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4614
Validate Fn::Select negative indexes by @0xTaoZ in https://github.com/aws-cloudformation/cfn-lint/pull/4622
New rule W3001 to warn for ignored SAM resource attributes by @0xTaoZ in https://github.com/aws-cloudformation/cfn-lint/pull/4620
test(W3001): cover guard branches and remove dead code by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4624
Update CloudFormation schemas to 2026-08-11 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4602

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.54.0...v1.55.0

Open source →

Additional notes

What's Changed

Update E3043 for Serverless::Application by @kddejong in #4617
Update W2533 Handler/Runtime on Zip Serverless::Function by @kddejong in #4618
Update W2530 SnapStart support for Serverless::Function by @kddejong in #4616
Update E3724 to validate IgnoreGlobals keys by @kddejong in #4615
Update E2529 count SAM CloudWatchLogs events by @kddejong in #4614
Validate Fn::Select negative indexes by @0xTaoZ in #4622
New rule W3001 to warn for ignored SAM resource attributes by @0xTaoZ in #4620
test(W3001): cover guard branches and remove dead code by @kddejong in #4624
Update CloudFormation schemas to 2026-08-11 by @github-actions[bot] in #4602

Full Changelog: v1.54.0...v1.55.0

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1.54.05 Aug 20263 sources agree

fix(ec2): Allow FromPort/ToPort for ICMPv6 in W3687 by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4600

What's Changed

fix(ec2): Allow FromPort/ToPort for ICMPv6 in W3687 by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4600
Remove SAM translator dependency, validate SAM templates via schemas by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4491
Update CloudFormation schemas to 2026-08-04 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4601

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.53.3...v1.54.0

Open source →

Additional notes

What's Changed

fix(ec2): Allow FromPort/ToPort for ICMPv6 in W3687 by @kddejong in #4600
Remove SAM translator dependency, validate SAM templates via schemas by @kddejong in #4491
Update CloudFormation schemas to 2026-08-04 by @github-actions[bot] in #4601

Full Changelog: v1.53.3...v1.54.0

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1.53.328 Jul 20263 sources agree

Cache RefResolver subschemas lookup per instance by @sir-sigurd in https://github.com/aws-cloudformation/cfn-lint/pull/4590

What's Changed

Cache RefResolver subschemas lookup per instance by @sir-sigurd in https://github.com/aws-cloudformation/cfn-lint/pull/4590
chore(deps): bump pyinstaller from 6.20.0 to 6.21.0 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4595
chore(deps): bump setuptools from 82.0.1 to 83.0.0 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4593
fix(E3701): Prevent false positive for Fn::If in OutputArtifacts Name by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4596
fix(schema): Add file locking to prevent concurrent cache corruption by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4598
Update CloudFormation schemas to 2026-07-28 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4589

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.53.2...v1.53.3

Open source →

Additional notes

What's Changed

Cache RefResolver subschemas lookup per instance by @sir-sigurd in #4590
chore(deps): bump pyinstaller from 6.20.0 to 6.21.0 in /requirements by @dependabot[bot] in #4595
chore(deps): bump setuptools from 82.0.1 to 83.0.0 in /requirements by @dependabot[bot] in #4593
fix(E3701): Prevent false positive for Fn::If in OutputArtifacts Name by @kddejong in #4596
fix(schema): Add file locking to prevent concurrent cache corruption by @kddejong in #4598
Update CloudFormation schemas to 2026-07-28 by @github-actions[bot] in #4589

Full Changelog: v1.53.2...v1.53.3

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1.53.223 Jul 20263 sources agree

Compute Context.module_names lazily to avoid rescan on every evolve() by @sir-sigurd in https://github.com/aws-cloudformation/cfn-lint/pull/4586

What's Changed

Compute Context.module_names lazily to avoid rescan on every evolve() by @sir-sigurd in https://github.com/aws-cloudformation/cfn-lint/pull/4586
Update CloudFormation schemas to 2026-07-23 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4583

New Contributors

@sir-sigurd made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4586

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.53.1...v1.53.2

Open source →

Additional notes

What's Changed

Compute Context.module_names lazily to avoid rescan on every evolve() by @sir-sigurd in #4586
Update CloudFormation schemas to 2026-07-23 by @github-actions[bot] in #4583

New Contributors

@sir-sigurd made their first contribution in #4586

Full Changelog: v1.53.1...v1.53.2

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1.53.120 Jul 20263 sources agree

Update snapshot script results file naming so that templates with sam… by @satyakigh in https://github.com/aws-cloudformation/cfn-lint/pull/4575

What's Changed

Update snapshot script results file naming so that templates with sam… by @satyakigh in https://github.com/aws-cloudformation/cfn-lint/pull/4575
fix: Don't error on FindInMap keys resolved from parameter defaults by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4580
chore(deps): bump actions/setup-python from 6 to 7 by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4581
Update CloudFormation schemas to 2026-07-20 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4576

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.53.0...v1.53.1

Open source →

Additional notes

What's Changed

Update snapshot script results file naming so that templates with sam… by @satyakigh in #4575
fix: Don't error on FindInMap keys resolved from parameter defaults by @kddejong in #4580
chore(deps): bump actions/setup-python from 6 to 7 by @dependabot[bot] in #4581
Update CloudFormation schemas to 2026-07-20 by @github-actions[bot] in #4576

Full Changelog: v1.53.0...v1.53.1

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1.53.09 Jul 2026

fix: Restore pricing and AWS API scripts, fix Elasticsearch instance type enum by @kddejong in #4569

What's Changed

fix: Restore pricing and AWS API scripts, fix Elasticsearch instance type enum by @kddejong in #4569
Update CloudFormation schemas to 2026-07-06 by @github-actions[bot] in #4562
fix: Move schema cache to platform-appropriate user directory by @kddejong in #4571
feat: Add version.json schema precedence and bundled fallback by @kddejong in #4573
Fix shared pricing defaults by @0xTaoZ in #4572
Update CloudFormation schemas to 2026-07-09 by @github-actions[bot] in #4570

New Contributors

@0xTaoZ made their first contribution in #4572

Full Changelog: v1.52.1...v1.53.0

Open source →

Additional notes3 sources agree

What's Changed

fix: Restore pricing and AWS API scripts, fix Elasticsearch instance type enum by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4569
Update CloudFormation schemas to 2026-07-06 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4562
fix: Move schema cache to platform-appropriate user directory by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4571
feat: Add version.json schema precedence and bundled fallback by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4573
Fix shared pricing defaults by @0xTaoZ in https://github.com/aws-cloudformation/cfn-lint/pull/4572
Update CloudFormation schemas to 2026-07-09 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4570

New Contributors

@0xTaoZ made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4572

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.52.1...v1.53.0

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1.52.129 Jun 20263 sources agree

fix: Auto-download schemas when not present for pre-commit users by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4558

What's Changed

fix: Auto-download schemas when not present for pre-commit users by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4558
Update CloudFormation schemas to 2026-06-26 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4554
Update CloudFormation schemas to 2026-06-29 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4559

New Contributors

@johnanand707 made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4527

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.52.0...v1.52.1

Open source →

Additional notes

What's Changed

fix: Auto-download schemas when not present for pre-commit users by @kddejong in #4558
Update CloudFormation schemas to 2026-06-26 by @github-actions[bot] in #4554
Update CloudFormation schemas to 2026-06-29 by @github-actions[bot] in #4559

New Contributors

@johnanand707 made their first contribution in #4527

Full Changelog: v1.52.0...v1.52.1

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1.52.023 Jun 20263 sources agree

Source schemas from enhanced-schemas repo instead of local patching by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4539

What's Changed

Source schemas from enhanced-schemas repo instead of local patching by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4539
fix: LanguageExtensions transform preserves Fn::Sub with underscore variables by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4548
fix: Resolve false positives for dead config properties by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4550
chore(deps): bump actions/checkout from 6 to 7 by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4552
Update CloudFormation schemas to 2026-06-22 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4549
fix: Add static test schemas so unit tests pass without cfn-lint -u by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4553

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.51.5...v1.52.0

Open source →

Additional notes

What's Changed

Source schemas from enhanced-schemas repo instead of local patching by @kddejong in #4539
fix: LanguageExtensions transform preserves Fn::Sub with underscore variables by @kddejong in #4548
fix: Resolve false positives for dead config properties by @kddejong in #4550
chore(deps): bump actions/checkout from 6 to 7 by @dependabot[bot] in #4552
Update CloudFormation schemas to 2026-06-22 by @github-actions[bot] in #4549
fix: Add static test schemas so unit tests pass without cfn-lint -u by @kddejong in #4553

Full Changelog: v1.51.5...v1.52.0

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1.51.515 Jun 20263 sources agree

fix: Correct schema false positives for ElastiCache and IAM by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4540

What's Changed

fix: Correct schema false positives for ElastiCache and IAM by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4540
chore(deps): bump codecov/codecov-action from 6 to 7 by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4541
fix: Allow decimal values in Logs MetricFilter MetricValue pattern by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4542
Update CloudFormation schemas to 2026-06-12 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4538
fix: Make EC2::TrafficMirrorFilterRule TrafficDirection case-insensitive by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4543
Update CloudFormation schemas to 2026-06-15 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4544

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.51.4...v1.51.5

Open source →

Additional notes

What's Changed

fix: Correct schema false positives for ElastiCache and IAM by @kddejong in #4540
chore(deps): bump codecov/codecov-action from 6 to 7 by @dependabot[bot] in #4541
fix: Allow decimal values in Logs MetricFilter MetricValue pattern by @kddejong in #4542
Update CloudFormation schemas to 2026-06-12 by @github-actions[bot] in #4538
fix: Make EC2::TrafficMirrorFilterRule TrafficDirection case-insensitive by @kddejong in #4543
Update CloudFormation schemas to 2026-06-15 by @github-actions[bot] in #4544

Full Changelog: v1.51.4...v1.51.5

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1.51.43 Jun 20263 sources agree

fix: E3042 false positive when Essential is omitted from ECS containers by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4536

What's Changed

fix: E3042 false positive when Essential is omitted from ECS containers by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4536
Update CloudFormation schemas to 2026-06-03 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4534

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.51.3...v1.51.4

Open source →

1.51.32 Jun 20263 sources agree

fix: Allow ProvisionedThroughput with 0 values when BillingMode is PAY_PER_REQUEST by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull

What's Changed

fix: Allow ProvisionedThroughput with 0 values when BillingMode is PAY_PER_REQUEST by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4524
Revert: S3 bucket names with uppercase should remain an error by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4528
fix: Allow ARN format for Lambda FunctionName property by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4529
feat: Add OpenSearch instance type validation from pricing API by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4525
fix: Sync update_schemas_manually.py with committed manual.json files by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4530
Update CloudFormation schemas to 2026-06-02 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4523
fix: Update Lambda runtime lifecycle dates from AWS docs by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4532

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.51.2...v1.51.3

Open source →

1.51.227 May 20263 sources agree

fix: Allow Fn::GetStackOutput in Output Values, Fn::Sub, and Fn::Base64 by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4519

What's Changed

fix: Allow Fn::GetStackOutput in Output Values, Fn::Sub, and Fn::Base64 by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4519
feat: Add rule E3065 for maxUniqueItems validation by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4520
Update CloudFormation schemas to 2026-05-27 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4518
fix: Support additional functions inside Fn::GetAZs by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4521

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.51.1...v1.51.2

Open source →

1.51.121 May 20263 sources agree

Fix Ref and GetAtt validation for MODULE sub-resources by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4510

What's Changed

Fix Ref and GetAtt validation for MODULE sub-resources by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4510
Fix TypeError in PipelineArtifactCounts when Provider is a Ref by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4512
Update CloudFormation schemas to 2026-05-18 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4509
chore(deps): bump pyinstaller from 6.19.0 to 6.20.0 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4500
chore(deps): update pyyaml requirement from >5.4 to >=6.0.3 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4471
chore(deps): update aws-sam-translator requirement from >=1.109.0 to >=1.110.0 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4515
Update CloudFormation schemas to 2026-05-21 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4513
Allow uppercase S3 bucket names, warn instead of error by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4516

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.51.0...v1.51.1

Open source →

1.51.012 May 20263 sources agree

Update snapshots script and conditions yaml by @satyakigh in https://github.com/aws-cloudformation/cfn-lint/pull/4479

What's Changed

Update snapshots script and conditions yaml by @satyakigh in https://github.com/aws-cloudformation/cfn-lint/pull/4479
feat: add rule W1054 to warn on raw pseudo-parameter strings without Ref by @cv-dote in https://github.com/aws-cloudformation/cfn-lint/pull/4453
feat: add rule E3064 to validate duplicate Interface VPC Endpoint with PrivateDnsEnabled by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4492
feat: Add support for Fn::GetStackOutput intrinsic function by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4495
Fix E3039 crash when Fn::Transform used at list properties by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4498
Fix ResultWriter schema of step functions by @szbartnik in https://github.com/aws-cloudformation/cfn-lint/pull/4497
Update CloudFormation schemas to 2026-05-11 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4490
Move SSM Parameter Name prefix check from error to warning by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4501
Fix W3664 false positive for regional CWL principal by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4506
Fix schema validation issues and add warning rules by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4502
Update CloudFormation schemas to 2026-05-12 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4503
Include usage path in W3034 parameter range error by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4507

New Contributors

@satyakigh made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4479
@cv-dote made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4453
@szbartnik made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4497

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.50.1...v1.51.0

Open source →

1.50.129 Apr 20263 sources agree

fix: Rule E3031 false positive for boolean values with pattern by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4485

What's Changed

fix: Rule E3031 false positive for boolean values with pattern by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4485
Add python 3.14 support by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4487
Update CloudFormation schemas to 2026-04-29 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4483
fix: use TOML-native posargs syntax for multi-arg expansion by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4488

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.50.0...v1.50.1

Open source →

1.50.027 Apr 20263 sources agree

feat: add rule E3720 to validate StorageEncrypted is set when KmsKeyId is specified for non-custom engine RDS DBInstances by @kddejong in https://gith

What's Changed

feat: add rule E3720 to validate StorageEncrypted is set when KmsKeyId is specified for non-custom engine RDS DBInstances by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4480
feat: add rule E3721 to validate ReplicaMode enum values for Oracle and Db2 engines by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4480
feat: add rule W3699 to warn when ReplicaMode is specified for non-Oracle/Db2 engines (silently ignored) by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4480
feat: add rule W3700 to warn when EIP Domain has non-standard values (silently converted to vpc) by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4480
Add maxUniqueItems JSON Schema keyword for arrays where duplicates are allowed but unique count is limited by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4480
Fix schema validation false positives for CloudWatch Alarm actions, Lambda Layers, Connect RoutingProfile, and stale smithy enums by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4480
Update CI badge in README.md by @ScottBrenner in https://github.com/aws-cloudformation/cfn-lint/pull/4478
Update CloudFormation schemas to 2026-04-27 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4477

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.49.3...v1.50.0

Open source →

1.49.322 Apr 20263 sources agree

chore(deps): update sympy requirement from >=1.0.0 to >=1.14.0 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/

What's Changed

chore(deps): update sympy requirement from >=1.0.0 to >=1.14.0 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4473
Fix E3719 false positive when BackupRetentionPeriod is omitted by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4475
Update CloudFormation schemas to 2026-04-22 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4467

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.49.2...v1.49.3

Open source →

1.49.222 Apr 20263 sources agree

Fix E1041 false positive: add Lambda::Function.Arn format to Lambda Alias by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4469

What's Changed

Fix E1041 false positive: add Lambda::Function.Arn format to Lambda Alias by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4469

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.49.1...v1.49.2

Open source →

1.49.121 Apr 20263 sources agree

Add rule E3718 to validate AuthorizerResultTtlInSeconds maximum of 3600 only applies to TOKEN and REQUEST authorizers by @kddejong in https://github.c

What's Changed

Add rule E3718 to validate AuthorizerResultTtlInSeconds maximum of 3600 only applies to TOKEN and REQUEST authorizers by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4444
Add rule W3671 to validate Iops is ignored for certain EBS volume types by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4444
Add rule E3719 to validate RDS BackupRetentionPeriod based on instance configuration by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4444
Fix schema false positives by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4463
Fix E3032 false positive on arrays with mutually exclusive conditions by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4464
Update CloudFormation schemas to 2026-04-21 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4462

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.49.0...v1.49.1

Open source →

1.49.020 Apr 20263 sources agree

feat: add rule E3712 to validate TargetTrackingScaling policy requires ASG MaxSize greater than MinSize by @kddejong in https://github.com/aws-cloudfo

What's Changed

feat: add rule E3712 to validate TargetTrackingScaling policy requires ASG MaxSize greater than MinSize by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4444
feat: add rule E3713 to validate Fargate ECS services use supported log drivers by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4444
feat: add rule E3714 to validate LaunchTemplate SecurityGroup and Subnet are in the same VPC by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4444
feat: add rule E3711 to validate ListenerRule target group protocol is not GENEVE by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4444
feat: add rule E3715 to validate VirtualName uses ephemeral device format when Ebs is absent by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4456
feat: add rule W3698 to warn VirtualName is ignored when Ebs is specified by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4456
feat: add rule E3716 to validate Lambda layer ARN length based on region by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4444
Expand format keyword coverage for additional AWS services by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4442
Add missing resource types to _all_property_types for GetAtt by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4443
Fix Lambda FunctionName maxLength from 140 to 64 by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4448
Fix false positive E3062 when EngineVersion is unquoted float by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4454
fix: condition CNF explosion for templates with nested condition references by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4455
Fix smithy script to check exceptions for pattern constraints by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4451
Skip me-south-1 during schema update due to endpoint timeout by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4449
chore(deps): restrict to Python 3.13 by @adrianmace in https://github.com/aws-cloudformation/cfn-lint/pull/4452
chore(deps): bump softprops/action-gh-release from 2 to 3 by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4457
Update CloudFormation schemas to 2026-04-20 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4450

New Contributors

@adrianmace made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4452

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.48.1...v1.49.0

Open source →

1.48.11 Apr 20263 sources agree

fix: Timestream lifecycle patches to exclude InfluxDB resources by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4437

What's Changed

fix: Timestream lifecycle patches to exclude InfluxDB resources by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4437
Add Publish to smithy action prefixes for LayerVersion validation by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4438
Update CloudFormation schemas to 2026-03-31 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4434

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.48.0...v1.48.1

Open source →

1.48.031 Mar 2026Deprecated3 sources agree

Freeze date in tests for deterministic runtime deprecation results by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4409

What's Changed

feat: add rule E3697 to validate Lambda env var 4KB size limit by @raajheshkannaa in https://github.com/aws-cloudformation/cfn-lint/pull/4405
Require VpcConfig when FileSystemConfigs is specified on Lambda Function by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4408
Freeze date in tests for deterministic runtime deprecation results by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4409
feat: add rule E3530 to validate AssumeRolePolicyDocument principal ARNs by @raajheshkannaa in https://github.com/aws-cloudformation/cfn-lint/pull/4410
Add W1053: Warn on dynamic references with spaces by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4412
Fix max recursion crash when cfnlintrc has non_zero_exit_code by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4414
Fix deployment file template path resolution from CWD by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4415
Fix maintenance workflow to update requirements/base.txt by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4416
Add enum validation for predictive scaling predefined metric types by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4417
Add JSONPath pattern validation for Step Functions state machine by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4419
Fix ForEach transform resolving functions in Fn::If condition name by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4418
Fix E2533 not reporting deprecated runtimes from AllowedValues by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4421
Add graph() function to cfnlint.api by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4422
feat: add rule E3706 to validate AutoScaling MaxSize is greater than or equal to MinSize by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4424
feat: add schema patch to enforce Lambda Layers maxItems of 5 by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4424
feat: add schema patch to validate CloudWatch AlarmName has no leading/trailing whitespace by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4424
feat: add schema patch for uniqueKeys on AutoScaling LaunchTemplate Overrides to prevent duplicate instance types by @kddejong in https://github.com/aws-cloudformation/cfn-lint /pull/4424
feat: add cfnGather JSON Schema keyword for cross-resource property validation by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4393
feat: add rule E3699 to validate API Gateway Method and Authorizer use the same RestApi by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4393
feat: add rule E3708 to validate API Gateway Method AuthorizationType matches Authorizer Type by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4393
feat: add rule E3698 to validate API Gateway Stage and Deployment use the same RestApi by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4393
feat: add rule E3705 to validate SQS FIFO queue EventSourceMapping BatchSize is at most 10 by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4393
feat: add rule W3664 to validate Lambda Permission Principal matches SourceArn resource type by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4393
feat: add rule E3707 to validate RDS DBInstance Engine matches DBCluster Engine by @ kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4393
feat: add rule E3709 to validate RDS DBInstance StorageEncrypted matches DBCluster by @ kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4393
feat: add rule W3694 to validate SNS Subscription Endpoint matches Protocol by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4393
Add RDS DBCluster MasterUsername validation by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4425
feat: add rule E3710 to error on resource types from fully shut down AWS services by @ kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4423
feat: add rule W3696 to warn on resource types from sunsetting AWS services by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4423
feat: add rule W3697 to warn on resource types from AWS services in maintenance mode by @ kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4423
fix: add required to cfnGather if/then schemas to prevent vacuous matches by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4426
chore(deps): bump codecov/codecov-action from 5 to 6 by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4432
Remove PyPI API token by @meeuw in https://github.com/aws-cloudformation/cfn-lint/pull/4431
Update CloudFormation schemas to 2026-03-31 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4411

New Contributors

@raajheshkannaa made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4405

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.47.1...v1.48.0

Open source →

1.47.124 Mar 20263 sources agree

Fix E3063 false positive when Code is a string (aws-cli pattern) by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4399

What's Changed

Fix E3063 false positive when Code is a string (aws-cli pattern) by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4399
Cap resolve_value permutations to prevent exponential blowup by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4394
Fix: maintenance guardduty policy by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4400
Add EngineVersion of 8.0.0 to DocDB Cluster by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4401
Support multi-attribute composite keys in DynamoDB GSI KeySchema by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4402
Allow JSONata string expressions for Arguments in Step Functions by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4403
Update CloudFormation schemas to 2026-03-24 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4404

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.47.0...v1.47.1

Open source →

1.47.017 Mar 20263 sources agree

Remove Python 3.9 support (EOL October 2025) by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4383

What's Changed

Remove Python 3.9 support (EOL October 2025) by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4383
feat: add region filtering to --update-specs by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4382
Add unknown validation state for intrinsic functions in composite validators by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4384
Update CloudFormation schemas to 2026-03-10 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4381
Fix/skip resolve unconstrained schema by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4388
chore(deps): bump setuptools from 82.0.0 to 82.0.1 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4385
Update CloudFormation schemas to 2026-03-13 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4386

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.46.0...v1.47.0

Open source →

1.46.02 Mar 20263 sources agree

Add rule E3063 to validate GuardDuty Detector property exclusivity by @JuanHPassos in https://github.com/aws-cloudformation/cfn-lint/pull/4364

What's Changed

Add rule E3063 to validate GuardDuty Detector property exclusivity by @JuanHPassos in https://github.com/aws-cloudformation/cfn-lint/pull/4364
Update CloudFormation schemas to 2026-03-02 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4375

New Contributors

@JuanHPassos made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4364

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.45.0...v1.46.0

Open source →

1.45.023 Feb 20263 sources agree

chore(deps): bump setuptools from 80.10.2 to 82.0.0 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4366

What's Changed

chore(deps): bump setuptools from 80.10.2 to 82.0.0 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4366
Add rule E3685 to validate container image functions cannot use Handler, Runtime, or Layers by @chrisqm-dev in https://github.com/aws-cloudformation/cfn-lint/pull/4372
Add rule E3696 to validate LogLevel is not supported when LogFormat is set to Text by @chrisqm-dev in https://github.com/aws-cloudformation/cfn-lint/pull/4372
chore(deps): bump pyinstaller from 6.18.0 to 6.19.0 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4370
Pin cfn-lint version to 1.44.0 in Dockerfile by @rchildress87 in https://github.com/aws-cloudformation/cfn-lint/pull/4365
Fix E3009 false positive for Fn::Transform in additional properties by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4368
Accept any SSM parameter and List types with warning for undocumented types by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4361
Update CloudFormation schemas to 2026-02-23 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4362

New Contributors

@chrisqm-dev made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4372
@rchildress87 made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4365

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.44.0...v1.45.0

Open source →

1.44.05 Feb 20263 sources agree

Add E3704: Enforce TransitEncryptionEnabled for Valkey ReplicationGroups by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4353

What's Changed

Add E3704: Enforce TransitEncryptionEnabled for Valkey ReplicationGroups by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4353
Add in more .kiro files for steering and agents by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4354
Migrate schema patches from botocore to AWS Smithy models by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4355
chore(deps): bump setuptools from 80.9.0 to 80.10.2 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4350
Update tox configurations and use tox in gha by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4356
update setuptools in pyproject.toml by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4357
Update CloudFormation schemas to 2026-02-03 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4347
Update CloudFormation schemas to 2026-02-05 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4358

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.43.4...v1.44.0

Open source →

1.43.421 Jan 20263 sources agree

Fix update specs in quick succession failing the command by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4339

What's Changed

Fix update specs in quick succession failing the command by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4339
Update CloudFormation schemas to 2026-01-21 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4338
Update E3601 to support Seconds as JSONata in Wait by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4343
Update E3601 to have Choices support Comment by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4344

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.43.3...v1.43.4

Open source →

1.43.315 Jan 20263 sources agree

Update Lambda runtime lifecycle data with latest AWS runtimes by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4335

What's Changed

Update Lambda runtime lifecycle data with latest AWS runtimes by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4335
chore(deps): bump pyinstaller from 6.17.0 to 6.18.0 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4336
Update CloudFormation schemas to 2026-01-15 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4333

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.43.2...v1.43.3

Open source →

1.43.25 Jan 20263 sources agree

Update CloudFormation schemas to 2026-01-05 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4329

What's Changed

Update CloudFormation schemas to 2026-01-05 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4329

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.43.1...v1.43.2

Open source →

1.43.118 Dec 20253 sources agree

SecurityGroupIds can take a name from a default VPC by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4324

What's Changed

SecurityGroupIds can take a name from a default VPC by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4324
add permissions to github actions by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4327
Update CloudFormation schemas to 2025-12-18 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4325

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.43.0...v1.43.1

Open source →

1.43.015 Dec 20253 sources agree

Add us-isob-west-1 region by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4318

What's Changed

Add us-isob-west-1 region by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4318
Refactor: Deduplicate schemas using hash-based storage by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4319
Update step function schema to allow Output in Succeeed state by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4320
Update CloudFormation schemas to 2025-12-11 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4317
Update CloudFormation schemas to 2025-12-15 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4321
chore(deps): bump peter-evans/create-pull-request from 7 to 8 by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4322

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.42.1...v1.43.0

Open source →

1.42.19 Dec 20253 sources agree

Fix rule E3601 Step Functions StartAt path resolution in Parallel branches by @tyukei in https://github.com/aws-cloudformation/cfn-lint/pull/4313

What's Changed

Fix rule E3601 Step Functions StartAt path resolution in Parallel branches by @tyukei in https://github.com/aws-cloudformation/cfn-lint/pull/4313
Fix rule E3601 Step Functions Map Iterator validation crash in StateMachineDefinition by @tyukei in https://github.com/aws-cloudformation/cfn-lint/pull/4308
Update CloudFormation schemas to 2025-12-08 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4305

New Contributors

@tyukei made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4308

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.42.0...v1.42.1

Open source →

1.42.030 Nov 20253 sources agree

chore(deps): bump actions/checkout from 5 to 6 by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4299

What's Changed

chore(deps): bump actions/checkout from 5 to 6 by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4299
.cfnlintrc config errors are returned as E0003 by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4300
New rules for RDS EOL by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4302
Update supported Python versions by @meeuw in https://github.com/aws-cloudformation/cfn-lint/pull/4266
State Machine: Implement check & Unit Tests for "StartAt" by @r-heimann in https://github.com/aws-cloudformation/cfn-lint/pull/4264
Update CloudFormation schemas to 2025-11-30 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4295
chore(deps): bump pyinstaller from 6.16.0 to 6.17.0 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4301

New Contributors

@meeuw made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4266

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.41.0...v1.41.1

Open source →

1.41.018 Nov 20253 sources agree

Update rule E3006 to fail on bad serverless resource types by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4278

What's Changed

Update rule E3006 to fail on bad serverless resource types by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4278
Validate resource Properties type by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4279
Update github actions python version by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4288
Add upcoming Europe Sovereign Region by @valerena in https://github.com/aws-cloudformation/cfn-lint/pull/4286
Update CloudFormation schemas to 2025-11-18 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4290

New Contributors

@valerena made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4286

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.40.4...v1.41.0

Open source →

1.40.43 Nov 20253 sources agree

Patch boto process to cover shap mismatch boto to schema by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4275

What's Changed

Patch boto process to cover shap mismatch boto to schema by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4275
Update CloudFormation schemas to 2025-10-31 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4270

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.40.3...v1.40.4

Open source →

1.40.327 Oct 20253 sources agree

Update CloudFormation schemas to 2025-10-27 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4261

What's Changed

Update CloudFormation schemas to 2025-10-27 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4261

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.40.2...v1.40.3

Open source →

1.40.214 Oct 20253 sources agree

Update the UpdatePolicy schema by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4257

What's Changed

Update the UpdatePolicy schema by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4257
Update gitsync schema parameter types by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4258
State Machine Unit Test: Fix another StartAt typo by @r-heimann in https://github.com/aws-cloudformation/cfn-lint/pull/4260
Update CloudFormation schemas to 2025-10-13 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4259

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.40.1...v1.40.2

Open source →

1.40.19 Oct 20253 sources agree

Update nodejs18.x lifecycle dates in LmbdRuntimeLifecycle.json to match official AWS Docs by @cullancarey in https://github.com/aws-cloudformation/cfn

What's Changed

Update nodejs18.x lifecycle dates in LmbdRuntimeLifecycle.json to match official AWS Docs by @cullancarey in https://github.com/aws-cloudformation/cfn-lint/pull/4250
Update integration tests by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4252
State Machine Unit Test: Fix StartAt typo by @r-heimann in https://github.com/aws-cloudformation/cfn-lint/pull/4251
Update CloudFormation schemas to 2025-10-09 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4248
Remove format patching for Cloud9 ImageId by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4255

New Contributors

@cullancarey made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4250
@r-heimann made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4251

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.40.0...v1.40.1

Open source →

1.40.029 Sept 20253 sources agree

increase sqs MaximumMessageSize maximum value by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4242

What's Changed

increase sqs MaximumMessageSize maximum value by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4242
chore(deps): bump actions/setup-python from 5 to 6 by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4243
chore(deps): bump pyinstaller from 6.15.0 to 6.16.0 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4244
Migrate from MarkedLoader to (C)SafeLoader by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4246
Update CloudFormation schemas to 2025-09-29 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4245

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.39.1...v1.40.0

Open source →

1.39.126 Aug 20253 sources agree

Remove rule E3056 by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4230

What's Changed

Remove rule E3056 by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4230
Update CloudFormation schemas to 2025-08-26 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4226
Reformat format keyword in some json files by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4232
Update StateMachine map to support legacy Iterator by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4231
Add output to Statemachine choice by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4233
Update SAM transform URI replacement to allow Fn::If by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4234
SAM transform comma lists to array by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4235
Update I3510 to skip dynamic references by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4236

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.39.0...v1.39.1

Open source →

1.39.018 Aug 20253 sources agree

Optimize rule filtering performance by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4222

What's Changed

Optimize rule filtering performance by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4222
Improved handling of directories for --list-templates by @gbudge in https://github.com/aws-cloudformation/cfn-lint/pull/4220
chore(deps): bump actions/checkout from 4 to 5 by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4224
Update CloudFormation schemas to 2025-08-18 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4217

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.38.3...v1.39.0

Open source →

1.38.312 Aug 20253 sources agree

Update CloudFormation schemas to 2025-08-12 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4212

What's Changed

Update CloudFormation schemas to 2025-08-12 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4212

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.38.2...v1.38.3

Open source →

1.38.25 Aug 20253 sources agree

Fix unit testing with lambda EOL date changes by @gbudge in https://github.com/aws-cloudformation/cfn-lint/pull/4208

What's Changed

Fix unit testing with lambda EOL date changes by @gbudge in https://github.com/aws-cloudformation/cfn-lint/pull/4208
Remove AmazonGuardDutyFullAccess from ManagedPolicies by @syldyer in https://github.com/aws-cloudformation/cfn-lint/pull/4209
chore(deps): bump pyinstaller from 6.14.2 to 6.15.0 in /requirements by @dependabot[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4211
Update CreationPolicy StartFleet type by @syldyer in https://github.com/aws-cloudformation/cfn-lint/pull/4210
Update CloudFormation schemas to 2025-08-04 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4204

New Contributors

@syldyer made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4209

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.38.1...v1.38.2

Open source →

1.38.130 Jul 20253 sources agree

Add --list-templates advanced / debugging parameter by @gbudge in https://github.com/aws-cloudformation/cfn-lint/pull/4195

What's Changed

Add --list-templates advanced / debugging parameter by @gbudge in https://github.com/aws-cloudformation/cfn-lint/pull/4195
Add to context to allow exceptions by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4197
Update CloudFormation schemas to 2025-07-30 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4190

New Contributors

@gbudge made their first contribution in https://github.com/aws-cloudformation/cfn-lint/pull/4195

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.38.0...v1.38.1

Open source →

1.38.014 Jul 20253 sources agree

Improve condition processing by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4187

What's Changed

Improve condition processing by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4187
Update CloudFormation schemas to 2025-07-14 by @github-actions[bot] in https://github.com/aws-cloudformation/cfn-lint/pull/4181

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.37.2...v1.38.0

Open source →

1.37.28 Jul 20253 sources agree

Fix template check when using cli by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4183

What's Changed

Fix template check when using cli by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4183

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.37.1...v1.37.2

Open source →

1.37.17 Jul 20253 sources agree

Create API for just taking a config by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4177

What's Changed

Create API for just taking a config by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4177
chore(deps): bump pyinstaller from 6.14.1 to 6.14.2 in /requirements by @dependabot in https://github.com/aws-cloudformation/cfn-lint/pull/4179
Update CloudFormation schemas to 2025-07-07 by @github-actions in https://github.com/aws-cloudformation/cfn-lint/pull/4176

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.37.0...v1.37.1

Open source →

1.37.01 Jul 20253 sources agree

Update CloudFormation schemas to 2025-06-30 by @github-actions in https://github.com/aws-cloudformation/cfn-lint/pull/4173

What's Changed

Update CloudFormation schemas to 2025-06-30 by @github-actions in https://github.com/aws-cloudformation/cfn-lint/pull/4173
Validate deployment files by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/3884

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.36.1...v1.37.0

Open source →

1.36.120 Jun 20253 sources agree

Allow * for resource partition by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4168

What's Changed

Allow * for resource partition by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4168
Update regex dynamic ref for ssm by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4170
Update CloudFormation schemas to 2025-06-19 by @github-actions in https://github.com/aws-cloudformation/cfn-lint/pull/4165

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.36.0...v1.36.1

Open source →

1.36.012 Jun 20253 sources agree

Don't decode when TemplateURL is dynamic reference by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4156

What's Changed

Don't decode when TemplateURL is dynamic reference by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4156
Break out requirements into separate files by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4158
chore(deps): bump pyinstaller from 6.13.0 to 6.14.0 in /requirements by @dependabot in https://github.com/aws-cloudformation/cfn-lint/pull/4160
chore(deps): bump pyinstaller from 6.14.0 to 6.14.1 in /requirements by @dependabot in https://github.com/aws-cloudformation/cfn-lint/pull/4161
Better logic of FindInMap resolution when ref isn't resolved by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4162
chore(deps): bump setuptools from 80.8.0 to 80.9.0 in /requirements by @dependabot in https://github.com/aws-cloudformation/cfn-lint/pull/4159
Update CloudFormation schemas to 2025-06-11 by @github-actions in https://github.com/aws-cloudformation/cfn-lint/pull/4155
Create an API for linting a file by path by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4163

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.35.4...v1.36.0

Open source →

1.35.42 Jun 20253 sources agree

Update CloudFormation schemas to 2025-06-02 by @github-actions in https://github.com/aws-cloudformation/cfn-lint/pull/4148

What's Changed

Update CloudFormation schemas to 2025-06-02 by @github-actions in https://github.com/aws-cloudformation/cfn-lint/pull/4148

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.35.3...v1.35.4

Open source →

1.35.321 May 20253 sources agree

Undo change 4138 by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4149

What's Changed

Undo change 4138 by @kddejong in https://github.com/aws-cloudformation/cfn-lint/pull/4149

Full Changelog: https://github.com/aws-cloudformation/cfn-lint/compare/v1.35.2...v1.35.3

Open source →

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