CVE-2026-63299CWE-770denial-of-service

CVE-2026-63299

Critical · published August 13, 2026

CVSS v3.1
9.9
EPSS
1%
Percentile
47.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.9 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00588 · 47.4th percentile
Weakness
CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-08-13T00:17Z
Affected products (3)
ProductVersionsFixed in
canonical/lxd≥ 5.0.0, < 5.0.85.0.8
canonical/lxd≥ 5.1, < 5.21.65.21.6
canonical/lxd≥ 6.0, < 6.106.10
References (1)
EPSS history
Timeline
  • 12 AUG 19:17Z
    Storage volume cross-project move and snapshot restore bypass project disk limits
    cvelistv5