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Suggestion detail

Untriaged
Permalink CVE-2026-47204
6.5 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): Low (L)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): None (N)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): Low (L)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): None (N)
  • Modified Availability (MA): High (H)
created 2 months ago Activity log
  • Created suggestion 2 months ago
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.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

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

Matching in nixpkgs

pkgs.envoy

Cloud-native edge and service proxy

  • nixos-unstable -
  • nixos-26.05 -

pkgs.envoy-bin

Cloud-native edge and service proxy

  • nixos-unstable -
  • nixos-26.05 -