CVE-2026-63294

Name	CVE-2026-63294
Description	A link following vulnerability in LXD allows an attacker to achieve root command execution on the host system. During the import or unpacking of crafted image or backup archives, LXD fails to properly validate and confine the backup.yaml file when it exists as a symbolic link. An attacker can exploit this flaw by providing a malicious archive with a symlinked backup.yaml file, causing LXD to process unconfined configuration metadata and execute arbitrary commands with root privileges.
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)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
lxd (PTS)	bookworm, bookworm (security)	5.0.2-5+deb12u6	vulnerable
	trixie (security), trixie	5.0.2+git20231211.1364ae4-9+deb13u7	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
lxd	source	bookworm	(unfixed)	end-of-life
lxd	source	(unstable)	(unfixed)

[bookworm] - lxd <end-of-life> (EOL in bookworm LTS)
https://github.com/canonical/lxd/security/advisories/GHSA-fv82-v4fj-mm4m