9.9

CVE-2026-63294

Exploit

Root RCE via image backup.yaml symlink

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Canonical ≫ Lxd Version >= 4.0.0 < 4.0.12
Canonical ≫ Lxd Version >= 5.0.0 < 5.0.8
Canonical ≫ Lxd Version >= 5.1 < 5.21.6
Canonical ≫ Lxd Version >= 6.0 < 6.10
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 1.02% 0.602
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Canonical 9.9 3.1 6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE-59 Improper Link Resolution Before File Access ('Link Following')

The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.

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