CVE-2026-12411

Broken Access Control in Canonical LXD DevLXD API

Published Jun 26, 2026 CVSS 3.1 · 8.4 High EPSS < 1% KEV · Not listed
Description
Broken Access Control in the devLXDInstancePatchHandler component of Canonical LXD allows an untrusted guest to mount, read, and overwrite another guest's custom storage volume via a crafted device PATCH request over /dev/lxd when security.devlxd.management.volumes is enabled.

Remediation

Vendor Solution

Upgrade to LXD version 6.9 or later.

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-hhf9-qw4v-72xp lxd allows Cross-guest volume hijack via DevLXD device patch
History
Type Values Removed Values Added
First Time appeared Canonical
Canonical lxd
Vendors & Products Canonical
Canonical lxd
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Broken Access Control in the devLXDInstancePatchHandler component of Canonical LXD allows an untrusted guest to mount, read, and overwrite another guest's custom storage volume via a crafted device PATCH request over /dev/lxd when security.devlxd.management.volumes is enabled.
Title Broken Access Control in Canonical LXD DevLXD API
Weaknesses CWE-639
CWE-862
References
Metrics cvssV3_1

{'score': 8.4, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
canonical
Published
Updated
Jun 26, 2026, 4:02 PM
Reserved
Jun 16, 2026, 3:07 PM
Status
Analyzed
Published
Jun 26, 2026, 4:16 PM
Modified
Oct 25, 2026, 5:10 PM