CVE-2026-47729

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.

Score

CVSS 3.1 6.5 Medium

Status

Analyzed - security-advisories@github.com

Published

2026-07-16

Last modified

2026-10-24

Weaknesses

CWE-125, CWE-1289

Affected products

• Squid (Squid-cache)

References

• https://github.com/squid-cache/squid/security/advisories/GHSA-8c37-pxjq-qwrg
• https://github.com/squid-cache/squid/pull/2408
• https://github.com/squid-cache/squid/pull/2409
• https://github.com/squid-cache/squid/commit/865a131c7d557e68c965043d98c2eccae26deef8
• https://github.com/squid-cache/squid/releases/tag/SQUID_7_6