CVE-2026-63299
Storage volume cross-project move and snapshot restore bypass project disk limits
- State
- Published
- Severity
- 8.5 High
- Published
- Aug 12, 2026
- Updated
- Aug 12, 2026
- Reserved
- Jul 16, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 8.5 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | canonical |
Weaknesses
- CWE-770 Allocation of Resources Without Limits or Throttling
Affected Products
| Product | Versions |
|---|---|
LXDCanonical |
|
References
- https://github.com/canonical/lxd/security/advisories/GHSA-5h78-p252-989hvdb-entryvendor-advisory
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