CVE-2026-34179
CRITICALUpdate of type field in restricted TLS certificate allows privilege escalation to cluster admin
Title source: cnaDescription
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.
Scores
CVSS v3
9.1
EPSS
0.0011
EPSS Percentile
29.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
total
Details
CWE
CWE-915
Status
published
Products (5)
canonical/lxd
0.0.0-20210305023314-538ac3df036eGo
canonical/lxd
4.12 - 5.0.6
Canonical/lxd
4.12.0 - 5.0.7
Canonical/lxd
5.1.0 - 5.21.5
Canonical/lxd
6.0.0 - 6.8.0
Published
Apr 09, 2026
Tracked Since
Apr 09, 2026