CVE-2026-34079: Flatpak

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Flatpak is a Linux application sandboxing and distribution framework. Prior to 1.16.4, the caching for ld.so removes outdated cache files without properly checking that the app controlled path to the outdated cache is in the cache directory. This allows Flatpak apps to delete arbitrary files on the host. This vulnerability is fixed in 1.16.4.

Affected products

• Flatpak Flatpak: before 1.16.4 (fixed in 1.16.4)

Published 2026-04-07. Last modified 2026-07-24.