Broken Access Control in Canonical LXD DevLXD API (Canonical lxd)

CVE-2026-12411
HIGH 8.4

At a glance

Source
NVD
EPSS
EPSS 0.29 % · percentile 21 ()
State
PUBLISHED
Published
Updated
Assigner
canonical
NVD status
Analyzed

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.

Weaknesses (CWE)

  • CWE-639 — Authorization Bypass Through User-Controlled Key
  • CWE-862 — Missing Authorization

References

Scores

VersionScoreVectorScored by
CVSS 3.1HIGH 8.4CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:Ncanonical
CVSS 3.1HIGH 8.4CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:NNVD · security@ubuntu.com (Secondary)
CVSS 3.1CRITICAL 9.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:NNVD · nvd@nist.gov (Primary)

European references

Affected configurations (NVD CPE)

Affected products

ProductVersions
Canonical · lxdaffected 6.6 < 6.9

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD