PT-2026-52840 · Canonical · Lxd

Published 2026-06-26 · Updated 2026-06-26 · CVE-2026-12411

NVD

CVSS v3.1

8.4

High

Base vector

AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

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.

Fix

Missing Authorization

IDOR

Weakness Enumeration

CWE-862

CWE-639

Related Identifiers

CVE-2026-12411

Affected Products

Lxd

References · 3

• https://github.com/canonical/lxd/pull/18585 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-12411 · Security Note
• https://github.com/canonical/lxd/security/advisories/GHSA-hhf9-qw4v-72xp · Vendor Advisory