CVE-2026-63293CWE-59

CVE-2026-63293

Critical · published August 13, 2026

CVSS v3.1
9.9
EPSS
1%
Percentile
47.6
In the wild
Unconfirmed
What it is

A link following vulnerability in LXD allows an attacker to achieve arbitrary file read and write operations on the host system. When importing or unpacking an image archive, LXD fails to validate whether the metadata.yaml file is a symbolic link. An attacker can exploit this flaw by providing a crafted image archive with a symlinked metadata.yaml file pointing to target file paths on the host system.

The record
Technical detail
CVSS v3.1
9.9 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00592 · 47.6th percentile
Weakness
CWE-59 · Improper Link Resolution Before File Access ('Link Following')
Published
2026-08-13T00:17Z
Affected products (1)
ProductVersionsFixed in
canonical/lxd≥ 4.0.0, < 4.0.124.0.12
References (2)
https://github.com/canonical/lxd/security/advisories/GHSA-j825-cg34-5fr5 · [email protected]https://github.com/canonical/lxd/security/advisories/GHSA-j825-cg34-5fr5 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 12 AUG 20:00Z
    Arbitrary File Read/Write: metadata.yaml symlink in image allows host filesystem access as root
    cvelistv5