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

Vulnerability from cvelistv5 – Published: 2026-08-10 20:45 – Updated: 2026-09-30 16:21
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.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-12 15:36 UTC
CWE
  • CWE-267 - Privilege Defined With Unsafe Actions
  • CWE-284 - Improper Access Control
Assigner
redhat CNA under the redhat root
CNA scorecard B 82/100 over 1206 records in the last 180 days details
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:53262 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:53263 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:60367 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:60520 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:73987 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 CPE status
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.
Red Hat Red Hat OpenShift AI 3.3 Unaffected: 1790137153 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.3::el9
Create a notification for this product.
Red Hat Red Hat OpenShift AI 3.4 Unaffected: 1784814352 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.4::el9
Create a notification for this product.
Red Hat Red Hat OpenShift AI 3.4 Unaffected: 1787361677 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.4::el9
Create a notification for this product.
Red Hat Red Hat OpenShift AI 3.5 Unaffected: 1786552271 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.5::el9
Create a notification for this product.
Red Hat Red Hat OpenShift AI 3.5 Unaffected: 1786552250 , < * (rpm)
    cpe:/a:redhat:openshift_ai:3.5::el9
Create a notification for this product.
Date Public
2026-08-10 18:54
Show details on NVD website
To clipboard 

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Workarounds

CNA · redhat
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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