CuraDevOps

Plan active

Envoy v1.40.0: breaking changes in build, mcp_router auth header forwarding

2026-10-19 18:19 UTC · Releases: envoy · read the source ↗ #envoy#service-mesh#breaking-change
  • Platform/SRE — Plan: v1.40.0 changes mcp_router to stop forwarding downstream headers (including authorization) to backends by default — a silent auth-breakage risk on upgrade. Audit MCP router configs and validate header_forwarding settings before rolling this out to any cluster.
  • CI/CD — Skip
  • Leader — Skip
  • Signals: breaking-change flagged
This entry was curated and judged by AI (Claude) with automated enrichment (CISA KEV / EPSS / public PoC). Verify against the original source before acting. Found a bad verdict? Report it — confirmed errors go to the corrections log.