CVE-2026-63293: Canonical Lxd

Critical severity, CVSS 9.9. EPSS: 0.6% chance of exploitation in the next 30 days.

A link following vulnerability in LXD allows an attacker to achieve arbitrary file read and write operations on the host system. When importing or unpacking an image archive, LXD fails to validate whether the metadata.yaml file is a symbolic link. An attacker can exploit this flaw by providing a crafted image archive with a symlinked metadata.yaml file pointing to target file paths on the host system.

Affected products

• Canonical Lxd: from 4.0.0, before 4.0.12 (fixed in 4.0.12)

Published 2026-08-12. Last modified 2026-09-03.