Description
A privilege escalation vulnerability exists in LXD from 6.0 before 6.9, 5.21.0 before 5.21.5, and 5.0.0 before 5.0.7 regarding the handling of project-restriction policies during snapshot restoration.. An authenticated project operator in a restricted multi-tenant environment can bypass policy restrictions by importing a maliciously crafted instance backup containing restricted configuration keys within a snapshot. When the snapshot is restored, these restricted keys are applied to the live instance without policy validation. Starting the modified instance grants the operator unauthorized host root access.
Severity (CVSS)
| Base score | 7.2 |
|---|---|
| Severity | High |
| Version | CVSS 3.1 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| Provided by | CNA |
Weaknesses
- CWE-863 — CWE-863: Incorrect Authorization
Affected products
| Vendor | Product | Versions |
|---|---|---|
| Canonical | LXD | 5.21.0 to <5.21.5; 5.0.0 to <5.0.7; 6.0 to <6.9 |
References
- https://github.com/canonical/lxd/security/advisories/GHSA-ppq7-4492-5552 (vdb-entry vendor-advisory)
- https://github.com/canonical/lxd/pull/18301 (patch)
- https://github.com/canonical/lxd/pull/18303 (patch)
- https://github.com/canonical/lxd/pull/18304 (patch)
Generated from the official CVE List on 27 Jun 2026 07:02 UTC.