CVE-2026-47729

Summary

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.

Impact & exploitability

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected products we track (1)

Recommendation

Apply the vendor fix in your normal patch cycle. Open any affected product above for its exact safe version.

Official patch: https://github.com/squid-cache/squid/commit/865a131c7d557e68c965043d98c2eccae26deef8 ↗

Additional information

• NVD record
• https://github.com/squid-cache/squid/commit/865a131c7d557e68c965043d98c2eccae26deef8Patch
• https://github.com/squid-cache/squid/pull/2408Patch
• https://github.com/squid-cache/squid/pull/2409Patch
• https://github.com/squid-cache/squid/security/advisories/GHSA-8c37-pxjq-qwrgAdvisory
• https://github.com/squid-cache/squid/releases/tag/SQUID_7_6