CVE-2026-34179CWE-915

Update of type field in restricted TLS certificate allows privilege escalation to cluster admin

Critical · published April 9, 2026

CVSS v3.1
9.1
EPSS
0%
Percentile
35.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00419 · 35.1th percentile
Weakness
CWE-915 · Improperly Controlled Modification of Dynamically-Determined Object Attributes
Published
2026-04-09T09:22Z
EPSS history
Timeline
  • 09 APR 09:22Z
    Update of type field in restricted TLS certificate allows privilege escalation to cluster admin
    cvelistv5