Security

• server: Reject requests missing both :authority and Host headers with HTTP 400 and status Internal . ( grpc/grpc-go#9365 )
• Special Thanks: @​winklemad

Commits

• 030ee8b Update version to 1.83.2 ( #9375 )

• 8668b69 cherry-pick #9365 to v1.83.x ( #9366 )

• a3e952d cherry-pick #9346 to v1.83.x and update x/net dependency ( #9369 )

• 58f8fd9 Change version to 1.83.2-dev ( #9337 )

• See full diff in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase. [//]: # (dependabot-automerge-start) [//]: # (dependabot-automerge-end) --- Dependabot commands and options You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR

• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it

• @dependabot show ignore conditions will show all of the ignore conditions of the specified dependency

• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)

• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)

• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself) You can disable automated security fix PRs for this repo from the Security Alerts page.

• 11303 : sql: fix empty/comment-only query handling in interactive shell

Security

• xds/rbac: Fix a bug where nested Principal or Permission rules with :scheme or grpc- prefixed header matchers were not rejected, which could cause DENY rules to fail open. ( #9258 )

• Special Thanks: @​nvxbug

• xds/rbac: Fix a bug where the host header matcher was not being replaced with :authority in nested Principal or Permission rules. ( #9258 )

• Special Thanks: @​nvxbug

• xds/rbac: Fix a bug where a header matcher whose name was not lowercase, such as X-Role , matched no header, which could cause DENY rules to fail open. ( #9332 )

• Special Thanks: @​alimony

• xds/rbac: Fix a bug where a :scheme or grpc- prefixed header matcher was accepted when its name was not lowercase. ( #9332 )

• Special Thanks: @​alimony

• xds/rbac: Fix a bug where a Host header matcher was not replaced with :authority . ( #9332 )

• Special Thanks: @​alimony

Performance

• transport: Restrict memory overhead of buffering small data frames. ( #9331 )

Security

• server: Stop reading from connections when flooded by HTTP/2 frames to mitigate resource exhaustion. The default value for this limit is 100 frames, excluding DATA and HEADERS, and may be changed by setting environment variable GRPC_GO_EXPERIMENTAL_CONTROL_BUFFER_THROTTLE_LIMIT .

• xds/rbac: Support Metadata and RequestedServerName permissions matcher fields. If present in a DENY rule, previously these would be ignored and fail-open.

• xds/rbac: Fix panic when parsing unsupported fields in NotRule / NotId permissions.

• xds/rbac: Support the deprecated source_ip principal identifier by treating it as equivalent to direct_remote_ip .

• xds: Fix panic when parsing route header matchers configured with empty exact_match , prefix_match , or suffix_match strings. ( #9223 )

New Features

• xds/googlec2p: Enable DirectPath over Interconnect support for on-premises clients via the force-xds target URI query parameter. ( #9133 )

• xds: Enable xDS configuration to control which fields get propagated from ORCA backend metric reports to LRS load reports. ( #9145 )

• authz: Add OnPolicyUpdate callback to FileWatcherOptions to notify when an authz policy is loaded or updated. ( #9142 )

• Special Thanks: @​hnefatl

• xds: Add support for the GCP Authentication HTTP Filter, which automatically fetches and attaches GCP Service Account Identity JWT tokens to outgoing RPCs.

• This feature can be enabled by setting environment variable GRPC_EXPERIMENTAL_XDS_GCP_AUTHENTICATION_FILTER=true . ( #9119 )

• xds: Add support for xDS-based HTTP CONNECT proxies.

• This feature can be enabled by setting environment variable GRPC_EXPERIMENTAL_XDS_HTTP_CONNECT=true . ( #9151 )

• xds: Add support for contains_match in route header matchers. ( #9223 )

Bug Fixes

• credentials/alts: Fix panic when processing malformed frames by validating that the message frame length exceeds the message type field size. ( #9197 )

• grpc: Fix compilation on Plan 9 targets ( GOOS=plan9 ), broken since v1.81.0. ( #9255 )

• Special Thanks: @​Yusufihsangorgel