CVE-2026-63298

EUVD-2026-57511

12.08.2026, 20:17

An improper neutralization of special elements vulnerability in LXD's NVIDIA instance configuration handling allows an authenticated attacker to inject arbitrary configuration directives. By supplying newline characters within the 'nvidia.driver.capabilities' or 'nvidia.require.*' configuration values, an attacker can manipulate the generated lxc.conf file. This flaw enables the attacker to execute arbitrary code on the host system with the privileges of the LXD daemon.

OS Command Injection

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	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: 53.11%

Affected Products (NVD)

Vendor	Product	Version
canonical	lxd	4.0.0 ≤ 𝑥 < 4.0.12
canonical	lxd	5.0.0 ≤ 𝑥 < 5.0.8
canonical	lxd	5.1 ≤ 𝑥 < 5.21.6
canonical	lxd	6.0 ≤ 𝑥 ≤ 6.9

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

lxd

bookworm	vulnerable
bookworm (security)	vulnerable
trixie	vulnerable
trixie (security)	vulnerable

Ubuntu Releases

Ubuntu Product

Codename

lxd

bionic	needs-triage
focal	needs-triage
jammy	dne
noble	dne
resolute	dne
xenial	needs-triage

Known Exploits!

Common Weakness Enumeration

CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
The software constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

References

https://github.com/canonical/lxd/security/advisories/GHSA-vfh7-q59q-54v2