CVE-2026-66898
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.
- Score
- CVSS 3.1 9.9 Critical
- Status
- Analyzed - security@ubuntu.com
- Published
- 2026-08-12
- Last modified
- 2026-10-24
- Weaknesses
- CWE-22
Affected products
References
- https://github.com/canonical/lxd/security/advisories/GHSA-m857-c7gc-c984
