9.9Critical

CVE-2026-63296Project restriction bypass via instance migration config override

Canonical LXD Published: (3 months ago)

Description

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.

Weakness (CWE): CWE-863

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

VendorProductVersions
Canonical LXD 5.0.0 – < 5.0.8, 5.21.0 – < 5.21.6, 6.0 – < 6.10

References and patches

CPE matches (NVD) (3)

  • cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:* ≥ 5.0.0 < 5.0.8
  • cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:* ≥ 5.1 < 5.21.6
  • cpe:2.3:a:canonical:lxd:*:*:*:*:*:*:*:* ≥ 6.0 < 6.10