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No exploitation reportedAwaiting NVD analysis

CVE-2026-19706

Openshift/installer: openshift installer: unconditional csr approval during agent-based installation (abi) bootstrap

No exploitation reported by the sources we read.

  • Published2026-11-09
  • WeaknessCWE-306

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC
  1. 2026-11-0917:20CVE publishedCNA

Versions per branch

Products declared by the CNA

As redhat, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.

7 more products in the CVE record.

Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-09

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-19706 yet.

Full record on NVD

Fix

No fix published by the sources we read yet. NVD record

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Metasploit modules
none listed
Metasploit Framework

Sources

  • CISA-ADPSSVC decisionnone2026-11-09
  • CNACVSS 3.18.32026-11-09
  • NVDCVSS 3.18.3read 2026-11-09
  • CNAweakness (CWE)CWE-3062026-11-09
  • NVDweakness (CWE)CWE-306read 2026-11-09
  • GitHub Advisoriesadvisory—

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Published
2026-11-09
Last Modified
2026-11-09
NVD status
Awaiting Analysis
GitHub Advisory
GHSA-9686-4jg7-g9h3

Frequently asked questions

What is 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.

Is CVE-2026-19706 actively exploited?

Active exploitation of CVE-2026-19706 has not been confirmed.

What is the CVSS score for CVE-2026-19706?

CVE-2026-19706 has a CVSS v3 base score of 8.3 (HIGH severity), with vector string CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.

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