Out-of-bounds Read Affecting squid package, versions <6.14-0ubuntu0.25.10.4


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
1.5% (72nd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-UBUNTU2510-SQUID-17328628
  • published17 Jun 2026
  • disclosed16 Jul 2026

Introduced: 17 Jun 2026

CVE-2026-47729  (opens in a new tab)
CWE-125  (opens in a new tab)
CWE-1289  (opens in a new tab)

How to fix?

Upgrade Ubuntu:25.10 squid to version 6.14-0ubuntu0.25.10.4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream squid package and not the squid package as distributed by Ubuntu. See How to fix? for Ubuntu:25.10 relevant fixed versions and status.

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 Base Scores

version 3.1