github.com/hashicorp/consul/api

SECURITY:

• connect: Upgrade Consul's bundled Envoy version to 1.35.3 and remove support for 1.31.10. This update also includes a fix to prevent Envoy (v1.35+) startup failures by only configuring the TLS transport socket when the CA bundle is present. [GH-22824]
• security: Adding warning when remote/local script checks are enabled without enabling ACL's [GH-22877]
• security: Improved validation of the Content-Length header in the Consul KV endpoint to prevent potential denial of service attacksCVE-2025-11374 [GH-22916]
• security: adding a maximum Content-Length on the event endpoint to fix denial-of-service (DoS) attacks. This resolves CVE-2025-11375. [GH-22836]
• security: breaking change - adding a key name validation on the key/value endpoint along side with the DisableKVKeyValidation config to disable/enable it to fix path traversal attacks on misconfigured or missing ACL policies. [GH-22850]

FEATURES:

• Added support to register a service in consul with multiple ports [GH-22769]
• agent: Added IsDualStack utility function to detect if the agent is configured for both IPv4 and IPv6 (dual-stack mode) based on its bind address retrieved from "agent/self" API. [GH-22741]
• install: Updated license information displayed during post-install
• ipv6: addtition of ip6tables changes for ipv6 and dual stack support [GH-22787]
• oidc: add client authentication using JWT assertion and PKCE. default PKCE is enabled. [GH-22732]

IMPROVEMENTS:

• security: Upgrade golang to 1.25.3. [GH-22926]
• ui: Fixes computed property override issues currently occurring and in some cases pre-emptively as this has been deprecated in ember v4 [GH-22947]
• ui: removes send action instances as part of https://deprecations.emberjs.com/id/ember-component-send-action/ [GH-22938]
• ui: replaced ember partials with components as an incremental step to upgrade to ember v4 [GH-22888]
• api: Added a new API (/v1/operator/utilization) to support enterprise API for Manual Snapshot Reporting [GH-22837]
• cmd: Added new subcommand consul operator utilization [-today-only] [-message] [-y] to generate a bundle with census utilization snapshot. Main flow is implemented in consul-enterprise http: Added a new API Handler for /v1/operator/utilization. Core functionality to be implemented in consul-enterprise agent: Always enabled census metrics collection with configurable option to export it to Hashicorp Reporting [GH-22843]
• cli: snapshot agent now supports authenticating to Azure Blob Storage using Azure Managed Service Identities (MSI). [GH-11171]
• command: connect envoy bootstrap defaults to 127.0.0.1 in IPv4-only environment and to ::1 in IPv6/DualStack environment. [GH-22763]
• connect: default upstream.local_bind_address to ::1 for IPv6 agent bind address [GH-22773]
• proxy: default proxy.local_service_address to ::1 for IPv6 agent bind address [GH-22772]
• ui: Improved accessibility features in the Consul UI to enhance usability for users with disabilities [GH-22770]
• ui: Replace yarn with pnpm for package management [GH-22790]
• ui: auth method config values were overflowing. This PR fixes the issue and adds word break for table elements with large content. [GH-22813]

BUG FIXES:

• ui: Allow FQDN to be displayed in the Consul web interface. [GH-22779]
• ui: fixes the issue where namespaces where disappearing and Welcome to Namespace screen showed up after tab switching [GH-22789]
• ui: fixes the issue where when doing deletes of multiple tokens or policies, the three dots on the right hand side stops responding after the first delete. [GH-22752]
• cmd: Fix consul operator utilization --help to show only available options without extra parameters. [GH-22912]

SECURITY:

• connect: Upgrade Consul's bundled Envoy version to 1.35.3 and remove support for 1.31.10. This update also includes a fix to prevent Envoy (v1.35+) startup failures by only configuring the TLS transport socket when the CA bundle is present. [GH-22824]

FEATURES:

• Added support to register a service in consul with multiple ports [GH-22769]
• agent: Added IsDualStack utility function to detect if the agent is configured for both IPv4 and IPv6 (dual-stack mode) based on its bind address retrieved from "agent/self" API. [GH-22741]
• install: Updated license information displayed during post-install
• ipv6: addtition of ip6tables changes for ipv6 and dual stack support [GH-22787]
• oidc: add client authentication using JWT assertion and PKCE. default PKCE is enabled. [GH-22732]

IMPROVEMENTS:

• api: Added a new API (/v1/operator/utilization) to support enterprise API for Manual Snapshot Reporting [GH-22837]
• cmd: Added new subcommand consul operator utilization [-today-only] [-message] [-y] to generate a bundle with census utilization snapshot. Main flow is implemented in consul-enterprise http: Added a new API Handler for /v1/operator/utilization. Core functionality to be implemented in consul-enterprise agent: Always enabled census metrics collection with configurable option to export it to Hashicorp Reporting [GH-22843]
• cli: snapshot agent now supports authenticating to Azure Blob Storage using Azure Managed Service Identities (MSI). [GH-11171]
• command: connect envoy bootstrap defaults to 127.0.0.1 in IPv4-only environment and to ::1 in IPv6/DualStack environment. [GH-22763]
• connect: default upstream.local_bind_address to ::1 for IPv6 agent bind address [GH-22773]
• proxy: default proxy.local_service_address to ::1 for IPv6 agent bind address [GH-22772]
• ui: Improved accessibility features in the Consul UI to enhance usability for users with disabilities [GH-22770]
• ui: Replace yarn with pnpm for package management [GH-22790]
• ui: auth method config values were overflowing. This PR fixes the issue and adds word break for table elements with large content. [GH-22813]

BUG FIXES:

• ui: Allow FQDN to be displayed in the Consul web interface. [GH-22779]
• ui: fixes the issue where namespaces where disappearing and Welcome to Namespace screen showed up after tab switching [GH-22789]
• ui: fixes the issue where when doing deletes of multiple tokens or policies, the three dots on the right hand side stops responding after the first delete. [GH-22752]

SECURITY:

• Migrate transitive dependency from archived mitchellh/mapstructure to go-viper/mapstructure to v2 to address CVE-2025-52893. [GH-22581]
• agent: Add the KV Validations to block path traversal allowing access to unauthorized endpoints. [GH-22682]
• agent: Fix a security vulnerability to filter out anonymous tokens along with empty tokens when setting the Results-Filtered-By-ACLs header [GH-22534]
• agent: Fix a security vulnerability where the attacker could read agent’s TLS certificate and private key by using the group ID that the Consul agent runs as. [GH-22626]
• api: add charset in all applicable content-types. [GH-22598]
• connect: Upgrade envoy version to 1.34.7 [GH-22735]
• security: Fix GHSA-65rg-554r-9j5x (CVE-2024-48908) by upgrading lycheeverse/lychee-action. [GH-22667]
• security: Fix a security vulnerability where the attacker could bypass authentication by passing url params as there was no validation on them. [GH-22612]
• security: perform constant time compare for sensitive values. [GH-22537]
• security: upgrade go version to 1.25.0 [GH-22652]
• security:: (Enterprise only) fix nil pointer dereference.
• security:: (Enterprise only) fix potential race condition in partition CRUD.
• security:: (Enterprise only) perform constant time compare for sensitive values.

FEATURES:

• config: Add new parameter max_request_headers_kb to configure maximum header size for requests from downstream to upstream [GH-22604]
• config: Handle a new parameter max_request_headers_kb to configure maximum header size for requests from downstream to upstream in API Gateway config and proxy-defaults [GH-22679]
• config: Handle a new parameter max_request_headers_kb to configure maximum header size for requests from downstream to upstream in Mesh Gateway via service-defaults and proxy-defaults [GH-22722]
• config: Handle a new parameter max_request_headers_kb to configure maximum header size for requests from downstream to upstream in Terminating Gateway service-defaults and proxy-defaults [GH-22680]

IMPROVEMENTS:

• cli: add troubleshoot ports in debug command. A ports.json file is created, which lists the open or closed ports on the host where the command is executed. [GH-22624]

BUG FIXES:

• agent: Don't show admin partition during errors [GH-11154]

SECURITY:

• security: Update Go to 1.23.12 to address CVE-2025-47906 [GH-22547]

IMPROVEMENTS:

• ui: Replaced internal code editor with HDS (HashiCorp Design System) code editor and code block components for improved accessibility and maintainability across the Consul UI. [GH-22513]

BUG FIXES:

• cli: capture pprof when ACL is enabled and a token with operator:read is used, even if enable_debug config is not explicitly set. [GH-22552]

IMPROVEMENTS:

• ui: Improved display and handling of IPv6 addresses for better readability and usability in the Consul web interface. [GH-22468]

BUG FIXES:

• cli: validate IP address in service registration to prevent invalid IPs in service and tagged addresses. [GH-22467]
• ui: display IPv6 addresses with proper bracketed formatting [GH-22423]

FEATURES:

• xds: Extend LUA Script support for API Gateway [GH-22321]
• xds: Added a configurable option to disable XDS session load balancing, intended for scenarios where an external load balancer is used in front of Consul servers, making internal load balancing unnecessary.

IMPROVEMENTS:

• http: Add peer query param on catalog service API [GH-22189]

• Enhancement: Added support for Consul Session to update the state of a Health Check, allowing for more dynamic and responsive health monitoring within the Consul ecosystem. This feature enables sessions to directly influence health check statuses, improving the overall reliability and accuracy of service health assessments.

SECURITY:

• Explicitly set 'Content-Type' header to mitigate XSS vulnerability. [GH-21704]
• Implement HTML sanitization for user-generated content to prevent XSS attacks in the UI. [GH-21711]
• UI: Remove codemirror linting due to package dependency [GH-21726]
• Upgrade Go to use 1.22.7. This addresses CVE CVE-2024-34155 [GH-21705]
• Upgrade to support aws/aws-sdk-go v1.55.5 or higher. This resolves CVEs CVE-2020-8911 and CVE-2020-8912. [GH-21684]
• ui: Pin a newer resolution of Braces [GH-21710]
• ui: Pin a newer resolution of Codemirror [GH-21715]
• ui: Pin a newer resolution of Markdown-it [GH-21717]
• ui: Pin a newer resolution of ansi-html [GH-21735]

FEATURES:

• grafana: added the dashboards service-to-service dashboard, service dashboard, and consul dataplane dashboard [GH-21806]
• server: remove v2 tenancy, catalog, and mesh experiments [GH-21592]

IMPROVEMENTS:

• security: upgrade ubi base image to 9.4 [GH-21750]
• connect: Add Envoy 1.31 and 1.30 to support matrix [GH-21616]

BUG FIXES:

• jwt-provider: change dns lookup family from the default of AUTO which would prefer ipv6 to ALL if LOGICAL_DNS is used or PREFER_IPV4 if STRICT_DNS is used to gracefully handle transitions to ipv6. [GH-21703]

SECURITY:

• ui: Upgrade modules with d3-color as a dependency to address denial of service issue in d3-color < 3.1.0 [GH-21588]

IMPROVEMENTS:

• Use Envoy's default for a route's validate_clusters option, which is false. This fixes a case where non-existent clusters could cause a route to no longer route to any of its backends, including existing ones. [GH-21587]

BUG FIXES:

• api-gateway: (Enterprise only) ensure clusters are properly created for JWT providers with a remote URI for the JWKS endpoint [GH-21604]