5.5

CVE-2026-50012

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Squid-cache ≫ Squid Version < 7.6
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.36% 0.689
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 5.5 1.2 4.2
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
security-advisories@github.com 5.5 1.2 4.2
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
CWE-122 Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

https://github.com/squid-cache/squid/releases/tag/SQUID_7_6
Release Notes
https://github.com/squid-cache/squid/security/advisories/GHSA-5vmx-9x64-9284
Vendor Advisory
https://github.com/squid-cache/squid/pull/2423
Patch
https://github.com/squid-cache/squid/commit/19fcfe922717c8b255270c032dcde4071c003bcd
Patch