---
id: CVE-2026-63296
title: >-
  An authorization bypass vulnerability in LXD allows an authenticated attacker
  to bypass target project restrictions during instance migration
summary: >-
  An authorization bypass vulnerability in LXD allows an authenticated attacker
  to bypass target project restrictions during instance migration. When
  migrating an instance to a target project, LXD accepts configuration overrides
  without va…
severity: critical
cvss: 9.9
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-863
vendor: canonical
product: lxd
affected:
  - 'lxd >= 5.0.0, < 5.0.8'
  - 'lxd >= 5.1, < 5.21.6'
  - 'lxd >= 6.0, < 6.10'
patched:
  - lxd 6.10
published: '2026-08-12'
updated: '2026-09-11'
sourceUpdated: '2026-09-11T15:15:30.017'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-63296'
references:
  - url: 'https://github.com/canonical/lxd/security/advisories/GHSA-gcr9-5q6r-w625'
    label: security@ubuntu.com
  - url: 'https://github.com/canonical/lxd/security/advisories/GHSA-gcr9-5q6r-w625'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00301
epssPercentile: 0.22979
ingestedAt: '2026-09-11T17:50:33.510Z'
---

## Overview

An authorization bypass vulnerability in LXD allows an authenticated attacker to bypass target project restrictions during instance migration. When migrating an instance to a target project, LXD accepts configuration overrides without validating the new configuration against the target project's enforced restrictions. An attacker can exploit this flaw to move instances with disallowed high-privilege configurations into restricted projects, bypassing security controls.

## Affected

- `lxd >= 5.0.0, < 5.0.8`
- `lxd >= 5.1, < 5.21.6`
- `lxd >= 6.0, < 6.10`

## Remediation

Upgrade past the affected range:

- `lxd 6.10`