UnratedRed Hat & Ubuntu Linux

Mako vulnerability

USN-8234-1 Published May 5, 2026

CVE-2026-41205

Affected products & platforms

Red Hat & Ubuntu LinuxUnclassified

Summary

It was discovered that Mako incorrectly handled URIs with double-slash prefixes in TemplateLookup. A remote attacker could possibly use this issue to obtain sensitive information. Affected Ubuntu releases: 26.04, 25.10, 24.04, 22.04, 20.04, 18.04, 16.04. CVEs: CVE-2026-41205.

Affected versions

Ubuntu 26.04
Ubuntu 25.10
Ubuntu 24.04
Ubuntu 22.04
Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04

Official advisory · medium-confidence parse· fetched 1 day ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Apply available updates: `sudo apt update && sudo apt upgrade` (a standard system update installs the fix).

Official advisory · medium-confidence parse· fetched 1 day ago·verify at source

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