CVE-2026-34179
Update of type field in restricted TLS certificate allows privilege escalation to cluster admin
CVSS Score
9.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-915 |
| Vendor | canonical |
| Product | lxd |
| Ecosystems | |
| Industries | Technology |
| Published | Apr 9, 2026 |
| Last Updated | Apr 9, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
Canonical / lxd
4.12.0 < 5.0.7 5.1.0 < 5.21.5 6.0.0 < 6.8.0
References
Credits
Miha Purg