CVSS 9.9 (critical) · published 2026-08-12
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 products (NVD): canonical lxd
Fixed in (NVD): 4.0.12, 5.0.4, 5.21.2
Weakness: CWE-22
Source: NVD CVE-2026-66898
Connect an AI agent to the FixLane MCP server or ask the Telegram bot to check what you have installed against incidents with a verified fixed version.