Vulnerability record · CVE-2026-47729 · published 16 July 2026

CVE-2026-47729: Squid-cache squid out-of-bounds read vulnerability

Squid Cache · Squid

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.

6.5 CVSS 3.1 Medium EPSS 2.4% · top 16.4% CWE-125 · Out-of-bounds readCWE-1289 · CWE-1289

6.5CVSS 3.1 base score

2.4%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

5References

20 Jul 2026Last modified by NVD

Description

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Squid Squid Cache

References

Link	Tags
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

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-47729), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.