What is CVE-2026-19706?

CVE-2026-19706 is a high-severity vulnerability in Red Hat Assisted Installer For Openshift Container Platform 2, classified under Missing Authentication for Critical Function. CVSS score: 8.3/10. Published 2026-11-09.

How severe is CVE-2026-19706?

High severity. CVSS v3 base score is 8.3 out of 10.

Auth bypass in Red Hat Assisted Installer For Openshift Container Platform 2

CVE-2026-19706

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.

Vulnerability class: Broken Authentication

Published 2026-11-09 · last modified 2026-11-09.

CVSS v3 metric

CVSS v3 base score 8.3 (High). Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

Frequently asked questions

What is CVE-2026-19706?: CVE-2026-19706 is a high-severity vulnerability in Red Hat Assisted Installer For Openshift Container Platform 2, classified under Missing Authentication for Critical Function. CVSS score: 8.3/10. Published 2026-11-09.
How severe is CVE-2026-19706?: High severity. CVSS v3 base score is 8.3 out of 10.