Medium severity · published Mar 3, 2026
CVE-2026-3351
Authorization Bypass in LXD GET /1.0/certificates Endpoint
4.3
CVSS
0.1%
EPSS
No
On KEV
Description
Improper authorization in the API endpoint GET /1.0/certificates in Canonical LXD 6.6 on Linux allows an authenticated, restricted user to enumerate all certificate fingerprints trusted by the lxd server.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 4% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LX
lxd · Canonical
6.6 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-3351
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-3351
Patch
https://github.com/canonical/lxd/commit/d936c90d47cf0be1e9757df897f769e9887ebde1
Issue Tracking
https://github.com/canonical/lxd/pull/17738
Exploit
https://github.com/canonical/lxd/security/advisories/GHSA-crmg-9m86-636r
More from lxd
9.9
CVE-2026-87799
Arbitrary file write on LXD host via symlink in migration stream
9.9
CVE-2026-85526
Path traversal via Btrfs optimized-backup subvolumes[].path enables root file/dir manipulation in LXD
9.9
CVE-2026-66897
Instance template path traversal allows arbitrary host file write as root
9.9
CVE-2026-66898
Path traversal via unvalidated instance name in backup tarball restore enables root file write / RCE
9.9
CVE-2026-63293
Arbitrary File Read/Write: metadata.yaml symlink in image allows host filesystem access as root