Vulnerability · Published Mar 3, 2026 · Assigned by canonical

CVE-2026-3351Authorization Bypass in LXD GET /1.0/certificates Endpoint

Low 2.1

In plain English

A low-severity missing authorization in lxd from Canonical. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)2.1Low

Exploit odds (30 days)0.2%top 95.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Go	github.com/canonical/lxd	0.0.0-20260224152359-d936c90d47cf	GHSA-crmg-9m86-636r
Go	github.com/canonical/lxd	no fix listed	GO-2026-4595

Affected products (as reported)

Vendor	Product	Versions
Canonical	lxd	6.6

Weakness: CWE-862 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:P

References

https://github.com/canonical/lxd/security/advisories/GHSA-crmg-9m86-636r vdb-entry, vendor-advisory
lxd/certificates: Return only allowed certificates in non-recursive list patch, issue-tracking
https://github.com/canonical/lxd/commit/d936c90d47cf0be1e9757df897f769e9887ebde1 patch