CVE-2026-63299
Storage volume cross-project move and snapshot restore bypass project disk limits
Description
An authorization bypass vulnerability in LXD allows an authenticated user to bypass project-level disk and volume limits. Two related code paths fail to verify resource limits during volume operations: the storagePoolVolumeTypePostMove function omits the limits.AllowVolumeCreation check before moving a volume across projects, and volume snapshot restore operations skip the AllowVolumeUpdate check when the configuration is nil (Config == nil). An attacker can exploit these flaws to allocate storage resources that exceed the administrative limits configured for a project.
INFO
Published Date :
Aug. 12, 2026, 7:17 p.m.
Last Modified :
Aug. 12, 2026, 7:17 p.m.
Remotely Exploit :
Yes !
Source :
canonical
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | cc1ad9ee-3454-478d-9317-d3e869d708bc |
Solution
- Update LXD to the latest secure version.
- Apply vendor patches for storage volume limit checks.
- Review LXD configuration for limit enforcement.
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