CVE-2026-12411

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.

CVSS 3.1

9.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

EPSS

0.3% chance of exploitation in the next 30 days; higher than 21% of CVEs (scores of 2026-10-25)

CWEs

CWE-639, CWE-862

Published

2026-06-26

Modified

2026-10-25

Record from

the NVD, synced 2026-10-25

Affected

• canonical:lxd

References

• https://github.com/canonical/lxd/pull/18585
• https://github.com/canonical/lxd/security/advisories/GHSA-hhf9-qw4v-72xp
• https://github.com/canonical/lxd/security/advisories/GHSA-hhf9-qw4v-72xp

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