CVE-2026-63294

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.

CVSS 3.1

9.9CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS

0.9% chance of exploitation in the next 30 days; higher than 58% of CVEs (scores of 2026-10-25)

CWE

CWE-59

Published

2026-08-12

Modified

2026-10-24

Record from

the NVD, synced 2026-10-24

Affected

• canonical:lxd

References

• https://github.com/canonical/lxd/security/advisories/GHSA-fv82-v4fj-mm4m
• https://github.com/canonical/lxd/security/advisories/GHSA-fv82-v4fj-mm4m

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