CVE-2026-54099 — Vulnerability intelligence

redhat — openshift container platform

Published: 2026-06-22T14:17:40.820

CVSS

8.8

CISA KEV

Not listed; not proof of no exploitation

Original source text (not a translation)

A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. The WICD CSR auto-approver validates that a Certificate Signing Request contains the organization system:wicd-nodes but does not reject additional organization values such as system:masters. A compromised Windows worker node that holds WICD credentials can submit a CSR that is auto-approved and signed by the cluster, yielding a client certificate that grants cluster-administrator privileges and enabling full cluster takeover.

Sources

• CVE-2026-54099
• Original advisory
• Original advisory
• Original advisory
• Original advisory
• Original advisory
• Vendor Advisory
• Issue Tracking, Vendor Advisory
• Vendor Advisory