Lxd
CVE-2026-3351
MEDIUM
GHSA-crmg-9m86-636r
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization checks on every request
MITRE ATT&CK
1 technique across 1 tactic: Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS 4.3 (MEDIUM). Attack vector: Network. Complexity: Low. Privileges required: Low. User interaction: None. Exploitation requires authentication. Public exploit/POC available. |
| Exploit ScenarioDerived | An attacker (requires authentication) could exploit this vulnerability to compromise the affected system. |
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Alert meAnalysisAIv1 – Mar 12, 2026
Canonical LXD 6.6 on Linux contains an authorization bypass in the GET /1.0/certificates API endpoint that allows authenticated users with restricted privileges to enumerate all certificate fingerprints trusted by the server. Public exploit code exists for this vulnerability. While this enables information disclosure with limited impact, it could facilitate further attacks by revealing trust relationships on the system.
Earlier versions of this analysis (1)
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 4.3 MEDIUM]
RemediationAI
A vendor patch is available — apply it immediately. Restrict network access to the affected service where possible.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in go
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Classified as CWE-862 (Missing Authorization). Affects the API component of Lxd. 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.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Primary rating from NVD.
CVSS VectorNVD
Lifecycle Timeline
3DescriptionCVE.org
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.
Executive ViewAI
CVE-2026-3351 presents moderate security risk, a missing authorization vulnerability rated CVSS 4.3. Attackers could gain access beyond their authorized level. Proof-of-concept code is publicly available. A patch is available and should be applied during regular vulnerability management.
Apply vendor patch. If patching is delayed: restrict network access and enable monitoring.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Affected Products (CPE)CVE.org
Cross-site request forgery in the LXD-UI component of Canonical LXD 5.0 before 5.0.5, 5.1 before 5.21.4, and 6.0 before
Privilege escalation in Canonical LXD's operations API (LXD before 6.5 and LXD 5.21 before 5.21.4) allows an authenticat
Authenticated remote attackers with access to the Canonical LXD instance log retrieval or deletion endpoints can read ar
Server-side template injection in Canonical LXD's instance snapshot naming feature lets an authenticated user who can mo
Unauthenticated project enumeration in Canonical LXD 5.21.x before 5.21.4 and 6.x before 6.5 lets remote attackers deter
Unauthenticated remote attackers can confirm the existence of LXD projects on Canonical LXD by comparing HTTP status cod
Privilege escalation to host root in Canonical LXD occurs when the container manager unpacks crafted image or backup arc
Host root code execution in Canonical LXD arises from a path-traversal flaw in instance template processing, letting an
Improper certificate validation in the HTTPS API listener of Canonical LXD lets an unauthenticated remote attacker prese
Arbitrary host file read and write in Canonical LXD occurs because the image import/unpack routine does not verify wheth
Canonical LXD's NVIDIA GPU passthrough configuration handler fails to sanitize newline characters in user-supplied `nvid
Path traversal in Canonical's LXD container and VM manager allows a user with backup import/restore privileges to write
Same weakness CWE-862 – Missing Authorization
View allVendor StatusVendor
SUSE
Severity: Medium| Product | Status |
|---|---|
| openSUSE Leap 15.6 | Fixed |
| SUSE Linux Enterprise Module for Package Hub 15 SP5 | Fixed |
| SUSE Linux Enterprise Module for Package Hub 15 SP6 | Fixed |
| openSUSE Leap 15.5 | Fixed |
Exploit-DB