A maintenance release focused on disclosed security fixes, with additional bug, dependency, and image updates. It also updates OAuth2 request handling, the Kafka test binary, and Docker base images.
Action needed (3)
securitymediumCVE-2026-26310 fix for scoped IPv6 address handling
Envoy fixes a crash in
getAddressWithPort()when it receives a scoped IPv6 address. The fix addresses CVE-2026-26310 and GHSA-3cw6-2j68-868p.securitymediumCVE-2026-26309 fix for
jsonstring terminator writesEnvoy fixes an off-by-one write that could corrupt the string null terminator in
json. The fix addresses CVE-2026-26309 and GHSA-56cj-wgg3-x943.securitymediumCVE-2026-26311 protection for
httpdecode methodsEnvoy blocks
decode*methods after a downstream reset inhttp. The fix addresses CVE-2026-26311 and GHSA-84xm-r438-86px.
Check if affected (2)
securityhighCVE-2026-26308 fix for
rbacmultivalue header bypassApplies if you use
rbac.securitymediumCVE-2026-26330 fix for
ratelimitresponse-phase crashesApplies if you use
ratelimit.