AI-analyzed release notes for CNCF graduated and incubating projects.
A feature release adds JetStream, leafnode, configuration, and protocol capabilities alongside fixes. Operator attention is needed for the narrowed MQTT retained-message subject constraint and ACL updates when domain-aware acknowledgements and flow control are enabled; the Go toolchain version also changes.
Check if affected (1)
breakingThe retained-message subject constraint
Applies if you use retained messages.
A release that removes older CRD API versions, changes defaults and configuration locations, and adds Kafka and HTTP Bridge capabilities. Monitoring configurations and standalone Topic Operator setups may require updates.
Action needed (2)
breakingThe UseConnectBuildWithBuildah feature gate, enabled by default
The UseConnectBuildWithBuildah feature gate moves to the beta stage and is enabled by default.
breakingThe /metrics endpoint, moved to the HTTP management interface
The /metrics endpoint is no longer available on the regular HTTP interface, which uses port 8080 by default. It is now available on the HTTP management interface on port 8081.
Check if affected (4)
breakingOlder CRD API versions, removed
Applies if you use the v1beta2, v1beta1, or v1alpha1 CRD APIs.
breakingThe Open Policy Agent (OPA) authorizer plugin, no longer bundled
Applies if you use the Open Policy Agent (OPA) authorizer plugin.
breakingLegacy TLS environment variables, ignored
Applies if you set any of STRIMZI_TLS_ENABLED, STRIMZI_TLS_AUTH_ENABLED, STRIMZI_PUBLIC_CA, STRIMZI_TRUSTSTORE_LOCATION, STRIMZI_TRUSTSTORE_PASSWORD, STRIMZI_KEYSTORE_LOCATION, or STRIMZI_KEYSTORE_PASSWORD.
A release with breaking configuration and flag changes, many new extension and protocol capabilities, and fixes for security, correctness, and observability. The recorded additions include module and filter extension APIs, MCP and A2A protocol support, OpenSSL builds, new formatters and metrics, and expanded streaming and TLS capabilities.
Action needed (1)
securityhighnghttp2 **CVE-2026-27135** patch
The nghttp2 **CVE-2026-27135** patch is included.
Check if affected (6)
securityURL encoding for query_parameter_mutations values
Applies if you configure query_parameter_mutations.
securityRBAC concatenation-based bypass prevention
Applies if RBAC runs.
breakingExplicit max_early_data_bytes configuration
Applies if you configure upstream_connect_mode with a value other than IMMEDIATE and do not configure max_early_data_bytes.
Plan ahead (1)
deprecatedThe enforce_rsa_key_usage option, deprecatedremoval date not announced
Applies if you configure enforce_rsa_key_usage.
A release with a fix for Lua code injection, a required Envoy version change, and an Envoy dependency update. It is tested against Kubernetes 1.32 through 1.34.
Check if affected (2)
securityhighCVE-2026-41246 fix for cookieRewritePolicies[].
Applies if you use HTTPProxy resources.
breakingEnvoy 1.35.0 minimum version
Applies if you depend on Envoy.
A maintenance release with a dependency and toolchain update, configuration constraint changes, performance improvements, and correctness fixes. It also fixes an ACL permission bypass along with issues affecting leaf connections, streams, storage, and client authentication.
Check if affected (3)
securityQueue subscription enforcement of ACL deny patterns
Applies if you use queue subscriptions and configure non-queue ACL deny patterns.
breakingThe no_auth_user configuration field, restricted to client connections
Applies if you configure no_auth_user.
breakingDuplicate INFO permission updates for solicited leaf connections
Applies if you use solicited leaf connections.
This release updates the Go toolchain and corrects authorization, leafnode, and WebSocket behavior. Configuration rules for no_auth_user and duplicate leaf permission updates are narrower, so affected existing setups may require review.
Check if affected (2)
breakingThe no_auth_user connection scope restriction
Applies if you configure no_auth_user.
breakingThe INFO permission update restriction
Applies if you use solicited leaf connections.
A maintenance release adds Helm v4 server-side apply support and includes numerous correctness fixes. The WASM decompression size-limit change affects inputs that were previously accepted and may require operator review.
Action needed (1)
breakingThe gzip decompression size limit for WASM binaries
A size limit is now enforced on gzip-decompressed WASM binaries fetched over HTTP.
