CVE-2026-15218: Models-as-a-service: red hat openshift ai: maas-api and maas-controller serviceaccounts with excessive permissions lead to privilege escalation

Severity: high (CVSS 7.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-17 · updated 2026-10-19
Weakness: CWE-266

Description

A flaw was found in the maas-api and maas-controller ServiceAccounts within Red Hat OpenShift AI. These ServiceAccounts are granted cluster-wide permissions that exceed their operational requirements. An attacker who compromises the identity of these ServiceAccounts, either through a remote code execution vulnerability or by creating a malicious pod in the same namespace, could exploit these excessive permissions. This could lead to full cluster administrator privileges through the creation of new ClusterRoleBindings or the disclosure of sensitive information by accessing all secrets across the cluster.

Affected products

Red Hat OpenShift AI 3.4: all versions — fixed in 1787153683, 1791790095

How to fix

Upgrade to a fixed version: Red Hat OpenShift AI 3.4 1787153683, 1791790095. Check the vendor advisory for mitigations.

References

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