CVE-2026-63293

EUVD-2026-57540
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.
Link Following
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.9 CRITICAL
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 46.11%
Affected Products (NVD)
VendorProductVersion
canonicallxd
4.0.0 ≤
𝑥
< 4.0.12
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
lxd
bookworm
vulnerable
bookworm (security)
vulnerable
trixie
vulnerable
trixie (security)
vulnerable
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
lxd
bionic
needs-triage
focal
needs-triage
jammy
dne
noble
dne
resolute
dne
xenial
needs-triage