CVE-2026-34179

CRITICAL EPSS 19.1%
Published Apr 9, 20262mo ago · Modified Jun 17, 20262w ago
9.1 CVSS 3.1
Critical
Find Similar
Published Apr 9, 2026 2mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
9.1
Exploitability
2.3
Impact
6.0
Vector string
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

Threat Intelligence

EPSS Exploit Probability
19.1% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-915

Affected Products 3

VendorProductVersionRange
canonicallxd*≥4.12  –  ≤5.0.6
canonicallxd*≥5.21.0  –  ≤5.21.4
canonicallxd*≥6.0  –  ≤6.7

References 2

  • github.com https://github.com/canonical/lxd/pull/17936
    Issue TrackingPatch
  • github.com https://github.com/canonical/lxd/security/advisories/GHSA-c3h3-89qf-jqm5
    ExploitThird Party Advisory

Remediation

  • github.com https://github.com/canonical/lxd/pull/17936
    Issue TrackingPatch