CVE-2026-19706

HighCVSS 8.3/10Last modified Nov 12, 2026

Description

During ABI bootstrap, the bootstrap node's approve-csr.service approves and signs every CSR without identity validation.

An attacker on the install network can retrieve the unauthenticated Ignition file (ports 22623/22624), extract a limited kubeconfig, submit a CSR for CN=system:admin, receive the signed certificate, and gain full cluster-admin access.

Exploitable only during the narrow bootstrap window.

Metrics

CVSS 3.1 8.3/10CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Weakness enumeration

CWE-306

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

No affected versions have been published.

Timeline

Published
Nov 9, 2026
Last modified
Nov 12, 2026
NVD status
Awaiting Analysis

Related CVEs from 2026

CVE-2026-197085.9The File Manager WordPress plugin before 8.0.5 does not prevent unauthenticated users from downloading its database backup archives, and in CVE-2026-197095.3The Membership For WooCommerce WordPress plugin before 3.1.2 does not check that an API consumer secret has actually been generated before cCVE-2026-19714.8A vulnerability has been found in Edimax BR-6288ACL up to 1.12. Impacted is the function wiz_WISP24gmanual of the file wiz_WISP24gmanual.aspCVE-2026-197107.3A vulnerability was found in SourceCodester Simple Student Information System. Affected by this vulnerability is an unknown functionality ofCVE-2026-197116.5The Premium Packages WordPress plugin before 7.0.7 does not validate a withdrawal request against the requesting user's actual earned balanCVE-2026-197126.1The Masteriyo LMS WordPress plugin before 2.3.3 does not sanitise and escape a quiz field before outputting it back in a page, and grants iCVE-2026-197135.4Adobe Experience Manager is affected by a DOM-based Cross-Site Scripting (XSS) vulnerability. An attacker could exploit this issue by manipuCVE-2026-197149.1The Simple JWT Login WordPress plugin before 3.6.8 does not validate the audience of the Google identity tokens it accepts, allowing unauthCVE-2026-197157.5The WP OAuth Server ( Login with WordPress ) WordPress plugin before 6.3.1 does not restrict access to the debug log it writes, which is stoCVE-2026-197165.1Stored Cross-site Scripting (CWE-79) in the user management component in maalfer Pentestify before 1.1.1 allows an authenticated attacker toCVE-2026-197177.5The CatFolders Document Gallery & PDF Library WordPress plugin before 2.0.7 does not have authorisation checks in some of its REST API endpoCVE-2026-197188.1The BlogVault Backup & Staging WordPress plugin before 6.65, MalCare WordPress Security Plugin WordPress plugin before 6.65, The WP Remote
CVE-2026-19706: High severity, CVSS 8.3 | Vulnix