CVE-2026-34079

Name	CVE-2026-34079
Description	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 Prior to 1.16.4, the caching for ld.so removes outdated cache files without properly checking that the app controlled path to the outdated cache is in the cache directory.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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	1132944

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
flatpak (PTS)	bullseye	1.10.8-0+deb11u2	vulnerable
	bullseye (security)	1.10.8-0+deb11u3	vulnerable
	bookworm, bookworm (security)	1.14.10-1~deb12u1	vulnerable
	trixie	1.16.3-1~deb13u1	vulnerable
	forky	1.16.3-1	vulnerable
	sid	1.16.4-2	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
flatpak	source	(unstable)	1.16.4-1			1132944

https://github.com/flatpak/flatpak/security/advisories/GHSA-p29x-r292-46pp