Ubuntu Security Notices USN-8157-1 USN-8157-1: Squid vulnerabilities Publication date 8 April 2026 Overview Several security issues were fixed in Squid. Releases 25.10 24.04 LTS 22.04 LTS Open side navigation Close side navigation Packages Details Update instructions References Packages 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. 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 In general, a standard system update will make all the necessary changes. Learn more about how to get the fixes. The problem can be corrected by updating your system to the following package versions: Ubuntu Release Package Version 25.10 questing squid – 6.14-0ubuntu0.25.10.2 24.04 LTS noble squid – 6.14-0ubuntu0.24.04.2 22.04 LTS jammy squid – 5.9-0ubuntu0.22.04.5 Reduce your security exposure Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines. Get Ubuntu Pro References CVE-2026-33526 CVE-2026-33515 CVE-2026-32748 CVE-2026-33526 CVE-2026-33515 CVE-2026-32748