CVE-2026-34179

PoC —

CVSS 3.1

9.1 critical

EPSS

<1%p20

Published

Apr 9, 2026 (Apr 9, 2026)

Modified

Jun 17, 2026

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.

Vendors: canonical
Products: lxd
Weakness: CWE-915
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.3%)

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