A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. (CVE-2026-54099)
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.
A flaw was found in the Windows Machine Config Operator (WMCO) for Red Hat OpenShift Container Platform. (CVE-2026-54099)
Description
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.
CVSS v3.1
Weaknesses
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-x82v-328r-gf3h
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-54099"]
- Ecosystems
- []
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6a6942079c2644c7f86ceaa8
Added to database: 07/28/2026, 23:57:59 UTC
Last updated: 07/29/2026, 01:36:58 UTC
Views: 5
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