CVE-2026-62420

Name	CVE-2026-62420
Description	An authorization bypass vulnerability in LXD allows an authenticated attacker to bypass target project security restrictions during cross-project instance migrations. When moving an instance cross-project to a different cluster member via POST /1.0/instances/{name} with migration: true, project: <target>, and target: <member>, the destination node skips all project restriction checks because the request arrives as an internal cluster notification. An attacker can exploit this to introduce disallowed instance configurations into a restricted project.
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)

Notes

[bookworm] - lxd <end-of-life> (EOL in bookworm LTS)
https://github.com/canonical/lxd/security/advisories/GHSA-v9wr-9r7q-fh4g
https://github.com/canonical/lxd/pull/18605
https://github.com/canonical/lxd/pull/18651 (stable-5.21)