Auth bypass in Canonical Lxd
CVE-2026-86335
Missing Authorization in imageDownload in Canonical LXD before 5.0.10, 5.21.8, and 6.10 on Linux allows a project-restricted client to access private images from other projects via local fingerprint reuse during image or instance import requests.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/canonical/lxd/security/advisories/GHSA-j7p3-5g2v-69j8 (issue-tracking, vendor-advisory)
- github.com/canonical/lxd/pull/19003 (patch)
- github.com/canonical/lxd/pull/19002 (patch)
- github.com/canonical/lxd/pull/19001 (patch)
- github.com/canonical/lxd/pull/18987 (patch)
Frequently asked questions
- What is CVE-2026-86335?
- CVE-2026-86335 is a medium-severity vulnerability in Canonical Lxd, classified under Missing Authorization. CVSS score: 6.3/10. Published 2026-09-28.
- How severe is CVE-2026-86335?
- Medium severity. CVSS v3 base score is 6.3 out of 10.