CVE-2026-66898

critical · 9.9

A path traversal vulnerability in LXD allows an attacker to manipulate file system paths during backup import and restore operations. When importing or restoring a backup archive, LXD fails to validate instance and storage volume names contained within the archive metadata. An attacker can exploit this flaw by supplying a crafted backup archive with malicious instance or volume names containing path traversal sequences, potentially allowing file access or overwriting outside the designated restore directory.

9.9

CVSS

0.6%

EPSS (exploit prob.)

46th

EPSS percentile

2026-08-12

Published

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

Weaknesses

CWE-22

Affected products

Vendor	Product	Affected versions
canonical	lxd	>= 4.0.0, < 4.0.12
canonical	lxd	>= 5.0.0, < 5.0.4
canonical	lxd	>= 5.1, < 5.21.2
canonical	lxd	6.0

Check a specific version with /api/v1/cve/match.

References

https://github.com/canonical/lxd/security/advisories/GHSA-m857-c7gc-c984
https://github.com/canonical/lxd/security/advisories/GHSA-m857-c7gc-c984

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-66898