Authorization Bypass in LXD GET /1.0/certificates Endpoint

published 2026-03-03 8 mo ago modified 2026-06-17 4 mo ago also GHSA-crmg-9m86-636r , GO-2026-4595 , EUVD-2026-9286

cvss: 4.3; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 4%
public exploits: 0; none known

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.

Patch / fix

fixed in 1 distros 2 links 2

go github.com/canonical/lxd 0.0.0-20260224152359-d936c90d47cf

suse opensuse

govulncheck-vulndb openSUSE Leap 15.6 0.0.20260317T205859-150000.1.152.1

suse advisories SUSE-SU-2026:1042-1

govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1

opensuse advisories openSUSE-SU-2026:21483-1

github.com/canonical/lxd@d936c90 commit
github.com/canonical/lxd#17738 pull request

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 8 mo ago (2026-03-03)

Exploit prediction

0.15% chance of exploitation in the next 30 days, higher than 4% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/canonical/lxd/security/advisories/GHSA-crmg-9m86-636r referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	2.1	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
CNA	4.0	2.1	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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
go	github.com/canonical/lxd	<0.0.0-20260224152359-d936c90d47cf all versions	0.0.0-20260224152359-d936c90d47cf

Affected products

Canonical lxd

Classification

Weakness

CWE-862 Missing Authorization

References

github.com /canonical/lxd/pull/17738
patch, issue-tracking, web
github.com /canonical/lxd/commit/d936c90d47cf0be1e9757df897f769e9887ebde1
patch, web
github.com /canonical/lxd/security/advisories/GHSA-crmg-9m86-636r
vdb-entry, vendor-advisory, web, exploit, mitigation, advisory
nvd.nist.gov /vuln/detail/CVE-2026-3351
advisory
github.com /canonical/lxd
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary