CVE-2026-62420
Description
An authorization bypass vulnerability in LXD allows an authenticated attacker to bypass target project security restrictions during cross-project instance migrations. When moving an instance cross-project to a different cluster member via POST /1.0/instances/{name} with migration: true, project: <target>, and target: <member>, the destination node skips all project restriction checks because the request arrives as an internal cluster notification. An attacker can exploit this to introduce disallowed instance configurations into a restricted project.
How to fix
- canonical lxd5.0.8, 5.21.6, 6.10 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| canonical lxd | 5.0.0 ≤ v < 5.0.8, 5.1 ≤ v < 5.21.6, 6.0 ≤ v < 6.10 | 5.0.8, 5.21.6, 6.10 |
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