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Untriaged
Permalink CVE-2026-50012
5.5 MEDIUM
  • CVSS version (CVSS): 3.1
  • Attack Vector (AV): Network (N)
  • Attack Complexity (AC): Low (L)
  • Privileges Required (PR): High (H)
  • User Interaction (UI): None (N)
  • Scope (S): Unchanged (U)
  • Confidentiality (C): None (N)
  • Integrity (I): Low (L)
  • Availability (A): High (H)
  • Modified Attack Vector (MAV): Network (N)
  • Modified Attack Complexity (MAC): Low (L)
  • Modified Privileges Required (MPR): High (H)
  • Modified User Interaction (MUI): None (N)
  • Modified Confidentiality (MC): None (N)
  • Modified Scope (MS): Unchanged (U)
  • Modified Integrity (MI): Low (L)
  • Modified Availability (MA): High (H)
created 2 weeks, 2 days ago Activity log
  • Created suggestion 2 weeks, 2 days ago
Squid: Memory corruption in cache_digest reply handling

Squid is a caching proxy for the Web. Prior to 7.6, due to an improper input validation bug in cache digest reply handling (peerDigestSwapInMask in src/peer_digest.cc), Squid is vulnerable to a heap-based buffer overflow: a cache digest's on-the-wire size may be larger than the mask_size declared within the digest, so a trusted peer sending a maliciously crafted reply to a cache_digest request message can trigger the overflow. This attack is limited to Squid instances compiled with the --enable-cache-digests option and configured with cache_peer entries. This issue is fixed in version 7.6.

Affected products

squid
  • ==< 7.6

Matching in nixpkgs

pkgs.squid

Caching proxy for the Web supporting HTTP, HTTPS, FTP, and more

  • nixos-unstable 7.6
    • nixpkgs-unstable 7.6
    • nixos-unstable-small 7.6
  • nixos-26.05 7.6
    • nixos-26.05-small 7.6
    • nixpkgs-26.05-darwin 7.6

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