CVE-2026-34179

CRITICAL
INFO Priority: 0.02 BB Relevance: 63/100
Published: 2026-04-09 Modified: 2026-10-26 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Integ. Impact Scope Change

CVSS Vector Breakdown

AV: Network
AC: Low
PR: High
UI: None
S: Changed
C: High
I: High
A: High

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.

Weakness Classification (1)

Affected Software (3)

VendorProductVersion
canonical lxd 4.12 – 5.0.6
canonical lxd 5.21.0 – 5.21.4
canonical lxd 6.0 – 6.7

References & Advisories (2)

Bug Bounty Relevance

63 / 100
✓ Network accessible
✓ Low complexity
✓ No user interaction

CVSS Score

9.1 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS — Exploitation Probability

0.27%
Raw Score 0.002740
Percentile 19.7%
Date 2026-10-29

EPSS Trend

2026-10-29
0.00274
2026-10-28
0.00274

Intelligence Sources

nvd ref →