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[USN-8157-1] Squid vulnerabilities

Posted on 08 April 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-8157-1
April 08, 2026

squid vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

Several security issues were fixed in Squid.

Software Description:
- squid: Web proxy cache server

Details:

It was discovered that Squid incorrectly handled certain ICP traffic. In
environments where ICP support is enabled, a remote attacker could use this
issue to cause Squid to crash, resulting in a denial of service, or obtain
small amounts of sensitive information.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.10
squid 6.14-0ubuntu0.25.10.2

Ubuntu 24.04 LTS
squid 6.14-0ubuntu0.24.04.2

Ubuntu 22.04 LTS
squid 5.9-0ubuntu0.22.04.5

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-8157-1
CVE-2026-32748, CVE-2026-33515, CVE-2026-33526

Package Information:
https://launchpad.net/ubuntu/+source/squid/6.14-0ubuntu0.25.10.2
https://launchpad.net/ubuntu/+source/squid/6.14-0ubuntu0.24.04.2
https://launchpad.net/ubuntu/+source/squid/5.9-0ubuntu0.22.04.5

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