VULNERABILITY INTELLIGENCE

CVE-2026-66898

CVSS score9.9 CRITICAL
EPSS probability0.59%
CISA KEVNot currently listed
Published2026-08-12
Last modified2026-10-24
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

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.

Weakness classification

  • security@ubuntu.com: CWE-22

Primary references