CVE-2026-63296
Project restriction bypass via instance migration config override
- State
- Published
- Severity
- 9.9 Critical
- Published
- Aug 12, 2026
- Updated
- Aug 13, 2026
- Reserved
- Jul 16, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.9 Critical | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | canonical |
Weaknesses
- CWE-863 Incorrect Authorization
Affected Products
| Product | Versions |
|---|---|
LXDCanonical |
|
References
- https://github.com/canonical/lxd/security/advisories/GHSA-gcr9-5q6r-w625vdb-entryvendor-advisory
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