Istio 1.1.9

This release includes several bug fixes and improvements to robustness. This release note describes what’s different between Istio 1.1.8 and Istio 1.1.9.

Bug fixes

  • Prevent overly large strings from being sent to Prometheus (Issue 14642).
  • Reuse previously cached JWT public keys if transport errors are encountered during renewal (Issue 14638).
  • Bypass JWT authentication for HTTP OPTIONS methods to support CORS requests (Issue 2160).
  • Fix Envoy crash caused by the Mixer filter (Issue 14707).

Small enhancements

  • Expose cryptographic signature verification functions to Lua Envoy filters (Envoy Issue 7009).