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CVE PROGRAM SOURCE RECORD6.5 Medium

CVE-2026-47204

Envoy: grpc_stats filter segfault on Connect protocol requests to direct_response routes

Description

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.grpc_stats filter crashes (null pointer dereference / segfault) when a Connect protocol request (Content-Type: application/connect+proto or application/connect+json) hits a direct_response route. A single unauthenticated HTTP request crashes the Envoy process. This vulnerability is fixed in 1.35.13, 1.36.9, 1.37.5, and 1.38.3.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

envoyproxy envoy

  • >= 1.38.0, < 1.38.3affected
  • >= 1.37.0, < 1.37.5affected
  • >= 1.36.0, < 1.36.9affected
  • >= 1.26.0, < 1.35.13affected

References