BIT-ENVOY-2026-47204 Envoy: grpc_stats filter segfault on Connect protocol requests to direct_response routes

Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.26.0 until 1.35.13, 1.36.9, 1.37.5, and 1.38.3, the envoy.filters.http.grpcstats filter crashes null pointer dereference / segfault when a Connect protocol request Content-Type: application/connect+proto...

CVE-2026-47204 Envoy: grpc_stats filter segfault on Connect protocol requests to direct_response routes

Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.26.0 until 1.35.13, 1.36.9, 1.37.5, and 1.38.3, the envoy.filters.http.grpcstats filter crashes null pointer dereference / segfault when a Connect protocol request Content-Type: application/connect+proto...

CVE-2026-47204

Envoy CVE-2026-47204 affects the envoy.filters.http.grpc_stats filter. From 1.26.0 up to 1.35.13, 1.36.9, 1.37.5, and 1.38.3, a Connect protocol request (Content-Type: application/connect+proto or application/connect+json) hitting a direct_response route could crash the Envoy process due to a nul...