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.

Project Subscriptions

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Advisories

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Fixes

Solution

Upgrade to LXD version 5.0.8 or later, 5.21.6 or later, or 6.10 or later.


Workaround

No workaround given by the vendor.

History

Wed, 12 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
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.
Title Storage volume cross-project move and snapshot restore bypass project disk limits
Weaknesses CWE-770
References
Metrics cvssV3_1

{'score': 8.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: canonical

Published:

Updated: 2026-08-12T19:26:28.110Z

Reserved: 2026-07-16T10:01:05.653Z

Link: CVE-2026-63299

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-12T20:17:47.830

Modified: 2026-08-12T20:17:47.830

Link: CVE-2026-63299

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses