CVE-2026-63294

A link following vulnerability in LXD allows an attacker to achieve root command execution on the host system. During the import or unpacking of crafted image or backup archives, LXD fails to properly validate and confine the backup.yaml file when it exists as a symbolic link. An attacker can exploit this flaw by providing a malicious archive with a symlinked backup.yaml file, causing LXD to process unconfined configuration metadata and execute arbitrary commands with root privileges.

CVSS v3 9.9 CRITICAL

9.9^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.1 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/canonical/lxd/security/advisories/GHSA-fv82-v4fj-mm4m	Third Party Advisory Exploit Mitigation
https://github.com/canonical/lxd/security/advisories/GHSA-fv82-v4fj-mm4m	Third Party Advisory Exploit Mitigation

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:canonical:lxd::::::::
	cpe:2.3:a:canonical:lxd::::::::
	cpe:2.3:a:canonical:lxd::::::::
	cpe:2.3:a:canonical:lxd::::::::

History

No history.

Information

Published : 2026-08-12 20:17

Updated : 2026-09-11 15:11

NVD link : CVE-2026-63294

Mitre link : CVE-2026-63294

CVE.ORG link : CVE-2026-63294

JSON object : View

Products Affected

canonical

lxd

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

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