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CVE-2026-34179 Details

Description

In Canonical LXD versions 4.12 through 6.7, the doCertificateUpdate function in lxd/certificates.go does not validate the Type field when handling PUT/PATCH requests to /1.0/certificates/{fingerprint} for restricted TLS certificate users, allowing a remote authenticated attacker to escalate privileges to cluster admin.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:9.1 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/canonical/lxd/security/advisories/GHSA-c3h3-89qf-jqm5	CISA-ADP	ExploitThird Party Advisory
https://github.com/canonical/lxd/pull/17936	[email protected]	Issue TrackingPatch
https://github.com/canonical/lxd/security/advisories/GHSA-c3h3-89qf-jqm5	[email protected]	ExploitThird Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-915	Improperly Controlled Modification of Dynamically-Determined Object Attributes	[email protected]

Affected Products

Product	Versions
canonical lxd	>= 4.12, <= 5.0.6 >= 5.21.0, <= 5.21.4 >= 6.0, <= 6.7
CPE cpe:2.3:a:canonical:lxd:::::::: Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Apr 22, 2026	Initial Analysis	[email protected]
Apr 9, 2026	CVE Modified	CISA-ADP
Apr 9, 2026	New CVE Received	[email protected]