CVEvulnerability
CVE-2026-66898
9.9 CRITICAL
Official page ↗
- Status
- Analyzed
- Published
- 2026-08-12
- Last modified
- 2026-10-24
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.9 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Weaknesses
- CWE-22
Description
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.
Affected configurations
• 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
Related
Weakness · CWE (1)
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory weakness
References
- https://github.com/canonical/lxd/security/advisories/GHSA-m857-c7gc-c984 Vendor Advisory, Exploit, Mitigation
- https://github.com/canonical/lxd/security/advisories/GHSA-m857-c7gc-c984 Vendor Advisory, Exploit, Mitigation