CVE-2026-34179
Update of type field in restricted TLS certificate allows privilege escalation to cluster admin
Vexday Risk Score
28Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 9.1EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Lifecycle
09 Apr 2026Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
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.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Affected products
Canonical · lxdWant to know if your infrastructure is exposed to this?
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