CVE-2026-63294
A link following vulnerability in LXD allows an attacker to achieve root command execution on the host system.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.21%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.9 CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 1.21% probability · 67th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-59
- Affected
- canonical/lxd
- Source
- security@ubuntu.com
References
- https://github.com/canonical/lxd/security/advisories/GHSA-fv82-v4fj-mm4mThird Party Advisory, Exploit, Mitigation
- https://github.com/canonical/lxd/security/advisories/GHSA-fv82-v4fj-mm4mThird Party Advisory, Exploit, Mitigation
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.