Announcing Istio 1.28.9 (opens in new tab)

This release contains bug fixes to improve robustness. This release note describes what’s different between Istio 1.28.8 and 1.28.9. BEFORE YOU UPGRADE Things to know and prepare before upgrading. DOWNLOAD Download and install this release. DOCS Visit the documentation for this release. SOURCE CHANGES Inspect the full set of source code changes. Security update For more information, see ISTIO-SECURITY-2026-005. Envoy CVEs ext_proc server sends unexpected ProcessingResponses to Envoy. MaxInfla...