A maintenance release with a security-relevant gRPC dependency upgrade, Pulsar Avro and JSON schema handling corrections, and a Scheduler cluster recovery fix. It also adds raw payload topic metadata and updates Avro payload conversion and CloudEvents schema registration.
Action needed (1)
securitycriticalThe
google.dependency and CVE-2026-33186 resolutiongolang. org/grpc The affected
google.dependency is upgraded to a version that resolves CVE-2026-33186. The fix ships in this release.golang. org/grpc
Check if affected (2)
breakingRejected
rawPayload=truepublishing to CloudEvents-wrapped topicsApplies if
rawPayloadis set for a CloudEvents-wrapped topic.Publishing with
rawPayload=trueto a CloudEvents-wrapped topic is rejected with a clear error. The constraint ships in this release.breakingStructural validation for
.topicsjsonschema Applies if you configure
..jsonschema Topics configured with
.compile ajsonschema goavrocodec at initialization and validate payloads withNativeFromTextualat publish time. Invalid schemas fail fast at startup, and the validation change ships in this release.