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.
Published: 2026-04-09
Score: 9.1 Critical
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
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Remediation

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History

Thu, 09 Apr 2026 12:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 09 Apr 2026 09:30:00 +0000

Type Values Removed Values Added
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.
Title Update of type field in restricted TLS certificate allows privilege escalation to cluster admin
Weaknesses CWE-915
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H'}


Subscriptions

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cve-icon MITRE

Status: PUBLISHED

Assigner: canonical

Published:

Updated: 2026-04-09T11:54:18.487Z

Reserved: 2026-03-26T09:24:08.449Z

Link: CVE-2026-34179

cve-icon Vulnrichment

Updated: 2026-04-09T11:54:09.651Z

cve-icon NVD

Status : Received

Published: 2026-04-09T10:16:21.963

Modified: 2026-04-09T12:16:18.557

Link: CVE-2026-34179

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses