Squid: Memory disclosure in FTP gateway
30Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendcvss 6.5
from disclosure to weapon0 days
Published on NVDJul 16
1st PoCJun 21
exploitation probability
—
observed exploitation
nono source reports it
1 public exploit(s)
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.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Affected products
squid-cache · squidpublic PoCs found — 1
githubgithub.com/0xBlackash/CVE-2026-47729★ 4⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://github.com/squid-cache/squid/commit/865a131c7d557e68c965043d98c2eccae26deef8https://github.com/squid-cache/squid/pull/2408https://github.com/squid-cache/squid/pull/2409https://github.com/squid-cache/squid/releases/tag/SQUID_7_6https://github.com/squid-cache/squid/security/advisories/GHSA-8c37-pxjq-qwrg