Information Exposure Affecting squid package, versions <4.10-1ubuntu1.13+esm1


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

Exploit Maturity
Proof of Concept
EPSS
62.87% (100th percentile)

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  • Snyk IDSNYK-UBUNTU2004-SQUID-13653230
  • published1 Nov 2025
  • disclosed17 Oct 2025

Introduced: 17 Oct 2025

CVE-2025-62168  (opens in a new tab)
CWE-209  (opens in a new tab)
CWE-550  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 squid to version 4.10-1ubuntu1.13+esm1 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:20.04 relevant fixed versions and status.

Squid is a caching proxy for the Web. In Squid versions prior to 7.2, a failure to redact HTTP authentication credentials in error handling allows information disclosure. The vulnerability allows a script to bypass browser security protections and learn the credentials a trusted client uses to authenticate. This potentially allows a remote client to identify security tokens or credentials used internally by a web application using Squid for backend load balancing. These attacks do not require Squid to be configured with HTTP authentication. The vulnerability is fixed in version 7.2. As a workaround, disable debug information in administrator mailto links generated by Squid by configuring squid.conf with email_err_data off.

CVSS Base Scores

version 3.1