CVE-2026-63299

CRITICAL
INFO Priority: 0.06 BB Relevance: 70/100
Published: 2026-08-12 Modified: 2026-10-24 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Integ. Impact Scope Change

CVSS Vector Breakdown

AV: Network
AC: Low
PR: Low
UI: None
S: Changed
C: High
I: High
A: High

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.

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
canonical lxd 5.0.0 – 5.0.8
canonical lxd 5.1 – 5.21.6
canonical lxd 6.0 – 6.10

References & Advisories (1)

Bug Bounty Relevance

70 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

9.9 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS — Exploitation Probability

0.59%
Raw Score 0.005880
Percentile 48.0%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00588
2026-10-28
0.00588

Intelligence Sources

nvd ref →