CVE-2026-54099 (GCVE-0-2026-54099)
Vulnerability from cvelistv5
Published
2026-06-22 12:46
Modified
2026-11-04 05:28
CWE
  • CWE-269 - Improper Privilege Management
Summary
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.
References
https://access.redhat.com/errata/RHSA-2026:47173 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:61780 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:81397 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:82440 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:94562 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-54099 vdb-entry, x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2487950 issue-tracking, x_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat OpenShift for Windows Containers 10.19 Unaffected: 1789075615   < *
    cpe:/a:redhat:windows_machine_config:10.19::el9
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   Red Hat Red Hat OpenShift for Windows Containers 10.20 Unaffected: 1789075603   < *
    cpe:/a:redhat:windows_machine_config:10.20::el9
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   Red Hat Red Hat OpenShift for Windows Containers 10.21 Unaffected: 1787065708   < *
    cpe:/a:redhat:windows_machine_config:10.21::el9
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   Red Hat Red Hat OpenShift for Windows Containers 10.22 Unaffected: 1783692800   < *
    cpe:/a:redhat:windows_machine_config:10.22::el9
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   Red Hat Red Hat OpenShift for Windows Containers 11.0 Unaffected: 1793279001   < *
    cpe:/a:redhat:windows_machine_config:11.0::el9
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   Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
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   Red Hat Red Hat OpenShift Container Platform 4     cpe:/a:redhat:openshift:4
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Show details on NVD website


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      "cveMetadata": "{\"cveId\": \"CVE-2026-54099\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-10-14T02:41:37.677Z\", \"dateReserved\": \"2026-06-11T19:02:42.736Z\", \"assignerOrgId\": \"53f830b8-0a3f-465b-8143-3b8a9948e749\", \"datePublished\": \"2026-06-22T12:46:04.051Z\", \"assignerShortName\": \"redhat\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.


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