CVE-2026-18951 (GCVE-0-2026-18951)

Vulnerability from cvelistv5 – Published: 2026-08-10 20:45 – Updated: 2026-08-11 04:41
VLAI
Title
Odh-training-operator-rhel9: [trainer v2 security] trn-02: rhoai overlay aggregates trainjobs crud into standard edit clusterrole
Summary
A flaw was found in the Red Hat OpenShift AI (RHOAI) overlay for the training operator. The RHOAI overlay incorrectly aggregates `trainjobs` management permissions into the native Kubernetes `edit ClusterRole`. This allows any user with `edit ClusterRole` permissions in a namespace to create, modify, and delete `TrainJobs`. When combined with a separate vulnerability (TRN-01) that permits arbitrary pod configurations, a remote attacker with namespace editor privileges could exploit this to escalate privileges, potentially leading to arbitrary code execution.
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:53263 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-18951 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2511187 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat OpenShift AI 3.3 Unaffected: 1785188461 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.3::el9
Create a notification for this product.
Date Public
2026-08-10 18:54
Show details on NVD website

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          "url": "https://access.redhat.com/security/cve/CVE-2026-18951"
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          "time": "2026-08-10T18:54:28.946Z",
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      "title": "Odh-training-operator-rhel9: [trainer v2 security] trn-02: rhoai overlay aggregates trainjobs crud into standard edit clusterrole",
      "workarounds": [
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          "value": "Administrators should review and adjust their Kubernetes RBAC configurations within Red Hat OpenShift AI to ensure that `trainjobs` permissions are explicitly managed. This involves removing `trainjobs` from the `aggregate-to-edit` ClusterRole labels or requiring explicit `RoleBinding` for `trainjobs` access. This prevents implicit permission grants to namespace editors and reduces the attack surface. Consult Kubernetes documentation for specific instructions on modifying ClusterRoles and RoleBindings. A restart or reload of affected components may be required for changes to take effect."
        }
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    "datePublished": "2026-08-10T20:45:10.112Z",
    "dateReserved": "2026-08-05T13:41:38.511Z",
    "dateUpdated": "2026-08-11T04:41:41.134Z",
    "state": "PUBLISHED"
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      "cve": "CVE-2026-18951",
      "id": "CVE-2026-18951",
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      "product_status:fixed": "3",
      "product_status:known_not_affected": "94",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "odh-training-operator-rhel9: [Trainer v2 Security] TRN-02: RHOAI overlay aggregates trainjobs CRUD into standard edit ClusterRole",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-18951.json",
      "version": "3"
    }
  }
}



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