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Details of issue NIXPKGS-2026-0589

NIXPKGS-2026-0589
published 3 months, 1 week ago
Permalink CVE-2026-26309
5.3 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): None (N)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): None (N)
  • Availability (A): Low (L)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): None (N)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): None (N)
  • Modified Availability (MA): Low (L)
updated 3 months, 1 week ago by @mweinelt Activity log
  • Created suggestion
  • @mweinelt ignored
    11 packages
    • opa-envoy-plugin
    • python312Packages.envoy-utils
    • python313Packages.envoy-utils
    • python314Packages.envoy-utils
    • python312Packages.envoy-reader
    • python313Packages.envoy-reader
    • python314Packages.envoy-reader
    • python313Packages.envoy-data-plane
    • python314Packages.envoy-data-plane
    • home-assistant-component-tests.enphase_envoy
    • tests.home-assistant-component-tests.enphase_envoy
  • @mweinelt accepted
  • @mweinelt published on GitHub
Envoy has an off-by-one write in JsonEscaper::escapeString()

Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, an off-by-one write in Envoy::JsonEscaper::escapeString() can corrupt std::string null-termination, causing undefined behavior and potentially leading to crashes or out-of-bounds reads when the resulting string is later treated as a C-string. This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.

Affected products

envoy
  • ==>= 1.37.0, < 1.37.1
  • ==< 1.34.13
  • ==>= 1.36.0, < 1.36.5
  • ==>= 1.35.0, < 1.35.9

Matching in nixpkgs

pkgs.envoy

Cloud-native edge and service proxy

Ignored packages (11)

Package maintainers

https://github.com/envoyproxy/envoy/security/advisories/GHSA-56cj-wgg3-x943