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HIGH

CVE-2026-18951

CVSS v3

8.8

HIGH

EPSS Score

0.9 %

exploit probability, as of 2026-10-17

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • CVE-2026-18951 Red Hat Product Security16 products fixed

    odh-training-operator-rhel9: [Trainer v2 Security] TRN-02: RHOAI overlay aggregates trainjobs CRUD into standard edit ClusterRole

  • RHSA-2026:73987 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: RHOAI 3.3.7 - Red Hat OpenShift AI

  • RHSA-2026:60520 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: RHOAI 3.4.4 - Red Hat OpenShift AI

  • RHSA-2026:60367 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: RHOAI 3.5 - Red Hat OpenShift AI

  • RHSA-2026:53263 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: RHOAI 3.3.6 - Red Hat OpenShift AI

  • RHSA-2026:53262 Red Hat Product Security3 products fixed

    Red Hat Security Advisory: RHOAI 3.4.3 - Red Hat OpenShift AI

Full record on NVD

Description

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.

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
2026-08-10
Last Modified
2026-08-11

Frequently asked questions

What is CVE-2026-18951?

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.

Is CVE-2026-18951 actively exploited?

Active exploitation of CVE-2026-18951 has not been confirmed. Its EPSS score was 0.9% on 2026-10-17, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2026-18951?

CVE-2026-18951 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

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