CVE-2026-12411

Broken Access Control in Canonical LXD DevLXD API

CVSS 8.4 HIGHEPSS 0.1%CWE-639 CWE-862

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 8.4EPSS 0.1%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

26 Jun 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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

Affected products

Canonical · lxd

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References

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