critical9.9
CVE-2026-62420
An authorization bypass vulnerability in LXD allows an authenticated attacker to bypass target project security restrictions during cross-project instance migr…
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Canonical | Lxd | from 5.0.0 before 5.0.8 from 5.1 before 5.21.6 from 6.0 before 6.10 |