Squid is a caching proxy for the Web. Prior to 7.6, due to an improper validation of syntactic correctness of input in the FTP gateway (src/clients/FtpGateway.cc), Squid is vulnerable to an out-of-bounds read: when a listing entry date in the TypeA or TypeB directory-listing formats is not followed by a filename, parsing was not restricted to the input buffer, so a trusted client accessing a misbehaving FTP server through Squid's gateway feature could read memory from random unrelated transactions. This issue is fixed in version 7.6.
Fix
Public exploits 2
- 0xBlackash/CVE-2026-47729 PoC on GitHub
- 0xredash/CVE-2026-47729 PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
Patch, vendor advisory and mitigation references on NVD 4
- https://github.com/squid-cache/squid/commit/865a131c7d557e68c965043d98c2eccae26deef8 Patch
- https://github.com/squid-cache/squid/pull/2408 Patch
- https://github.com/squid-cache/squid/pull/2409 Patch
- https://github.com/squid-cache/squid/security/advisories/GHSA-8c37-pxjq-qwrg Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 6.5 · squid-cacheNVD modified 2026-10-24 20:10
Affected (CPE criteria) 1
cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*
References 5
- https://github.com/squid-cache/squid/commit/865a131c7d557e68c965043d98c2eccae26deef8 Patch
- https://github.com/squid-cache/squid/pull/2408 Patch
- https://github.com/squid-cache/squid/pull/2409 Patch
- https://github.com/squid-cache/squid/releases/tag/SQUID_7_6 Release Notes
- https://github.com/squid-cache/squid/security/advisories/GHSA-8c37-pxjq-qwrg Vendor Advisory