VDB-348538 · CVE-2026-3351 · GHSA-crmg-9m86-636r

Canonical LXD 6.6 on Linux API Endpoint /1.0/certificates authorization

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.2	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in Canonical LXD 6.6 on Linux. This vulnerability affects unknown code of the file /1.0/certificates of the component API Endpoint. Executing a manipulation can lead to authorization. This vulnerability appears as CVE-2026-3351. The attack may be performed from remote. There is no available exploit. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability has been found in Canonical LXD 6.6 on Linux and classified as problematic. This vulnerability affects an unknown functionality of the file /1.0/certificates of the component API Endpoint. The manipulation with an unknown input leads to a authorization vulnerability. The CWE definition for the vulnerability is CWE-862. The product does not perform an authorization check when an actor attempts to access a resource or perform an action. As an impact it is known to affect confidentiality. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability was named CVE-2026-3351 since 02/27/2026. The exploitation appears to be easy. The attack can be initiated remotely. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 301142 (Linux Distros Unpatched Vulnerability : CVE-2026-3351), which helps to determine the existence of the flaw in a target environment.

Applying the patch d936c90d47cf0be1e9757df897f769e9887ebde1 is able to eliminate this problem. The bugfix is ready for download at github.com.

The vulnerability is also documented in the databases at Tenable (301142) and EUVD (EUVD-2026-9286). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

Canonical

Name

Version

License

open-source

Website

Product: https://github.com/canonical/lxd/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 4.3
NVD Vector: 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Authorization
CWE: CWE-862 / CWE-863 / CWE-285
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 301142
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-3351

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: d936c90d47cf0be1e9757df897f769e9887ebde1

Timelineinfo

02/27/2026 CVE reserved
03/03/2026 +4 days Advisory disclosed
03/03/2026 +0 days VulDB entry created
03/11/2026 +8 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-crmg-9m86-636r
Status: Confirmed

CVE: CVE-2026-3351 (🔒)
GCVE (CVE): GCVE-0-2026-3351
GCVE (VulDB): GCVE-100-348538
EUVD: 🔒

Entryinfo

Created: 03/03/2026 14:39
Updated: 03/11/2026 20:21
Changes: 03/03/2026 14:39 (70), 03/04/2026 19:48 (1), 03/05/2026 01:13 (1), 03/07/2026 17:12 (2), 03/11/2026 20:21 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.