CVEvulnerability

CVE-2026-63300

9.9 CRITICAL Published 2026-08-12 Modified 2026-10-24 Official page ↗
Status
Analyzed
Published
2026-08-12
Last modified
2026-10-24
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.9 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weaknesses
CWE-862

Description

An improper validation vulnerability in the instancePostMigration function in lxd/instance_post.go of LXD allows an authenticated attacker with can_create_instances permissions on a restricted project to bypass project-level security restrictions. When migrating an instance between projects, LXD fails to validate the instance's configuration against the target project's enforced restrictions (such as restricted.containers.lowlevel, restricted.devices.*, and restricted.networks.access). An attacker can exploit this by creating a disallowed or high-privilege instance in an unrestricted project and subsequently moving it into the restricted project.

Affected configurations

• canonical lxd (>= 5.0.0 < 5.0.8) • canonical lxd (>= 5.1 < 5.21.6) • canonical lxd (>= 6.0 < 6.10)

Related

Weakness · CWE (1)

  • CWE-862 Missing Authorization weakness

References