QwikSec

Security Database

CVE

CWE

Training

CVE Database
/

CVE-2026-34178

Back to search

CVE-2026-34178

Published: Apr 9, 2026

Modified: Apr 9, 2026

PUBLISHED

CVSS v3.1

9.1

CRITICAL

Description

In Canonical LXD before 6.8, the backup import path validates project restrictions against backup/index.yaml in the supplied tar archive but creates the instance from backup/container/backup.yaml, a separate file in the same archive that is never checked against project restrictions. An authenticated remote attacker with instance-creation permission in a restricted project can craft a backup archive where backup.yaml carries restricted settings such as security.privileged=true or raw.lxc directives, bypassing all project restriction enforcement and allowing full host compromise.

VendorProductVersions

Canonical

lxd

affected
4.12.0 - < 5.0.7
affected
5.1.0 - < 5.21.5
affected
6.0.0 - < 6.8.0

Weaknesses (CWE)

CWE-20

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

References

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Start Training

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.

Scan Now