CVE-2026-85526
critical · 9.9Path traversal in the Btrfs storage driver (unpackVolume) in Canonical LXD on Linux allows an authenticated user with instance creation privileges to delete or replace arbitrary files and directories on the host filesystem as root via a crafted subvolumes[].path entry in backup/optimized_header.yaml during a btrfs optimized backup import.
9.9
CVSS
—
EPSS (exploit prob.)
—
EPSS percentile
2026-09-28
Published
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weaknesses
CWE-22
References
- https://github.com/canonical/lxd-private/pull/103
- https://github.com/canonical/lxd-private/pull/104
- https://github.com/canonical/lxd-private/pull/105
- https://github.com/canonical/lxd-private/pull/84
- https://github.com/canonical/lxd-private/pull/87
- https://github.com/canonical/lxd/security/advisories/GHSA-h85r-gjgx-g2rv
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2026-85526