CVE-2026-18951Network attack vector

Privilege escalation via aggregated TrainJob permissions

Published Aug 10, 2026 · Updated Aug 10, 2026

Improper access control in Red Hat OpenShift AI 3.3 and 3.4 allows remote authenticated users to gain TrainJob management privileges. The training-operator overlay labels a TrainJob CRUD ClusterRole for aggregation into Kubernetes' built-in edit ClusterRole, silently extending every namespace editor's permissions. Namespace editor access is required, and arbitrary code execution additionally depends on a separate flaw that permits attacker-controlled pod configurations.

CVSS severity8.8
High
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in Red Hat OpenShift AI 3.3 and 3.4 allows remote authenticated users to gain TrainJob management privileges. The training-operator overlay labels a TrainJob CRUD ClusterRole for aggregation into Kubernetes' built-in edit ClusterRole, silently extending every namespace editor's permissions. Namespace editor access is required, and arbitrary code execution additionally depends on a separate flaw that permits attacker-controlled pod configurations.

The record

CVE
CVE-2026-18951
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
389 Directory Server
Product
Red Hat OpenShift AI
Classifications
CWE-284, T1068
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

389 Directory Server · Red Hat OpenShift AIAffected versions are unavailable in this record.

Published CVSS scores

8.8Red HatCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-284Improper Access Control
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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