CVE-2026-18950 in OpenShift AI
Summary
by MITRE • 08/11/2026
A flaw was found in odh-dashboard. An authenticated user of the dashboard can exploit a vulnerability related to how RoleBindings are created. The system does not properly validate the `roleRef` field, allowing a user to specify an arbitrary role, including highly privileged ones like `cluster-admin`. This can lead to privilege escalation, where an attacker gains unauthorized elevated access within their namespace and potentially persistent control over the system.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 08/11/2026
The vulnerability exists within the odh-dashboard component where improper validation of the roleRef field in RoleBinding creation operations allows authenticated users to escalate privileges. This flaw represents a critical authorization bypass that directly violates the principle of least privilege and can result in unauthorized administrative access within the affected namespace. The issue stems from insufficient input sanitization and validation mechanisms that should enforce proper role assignment boundaries, enabling malicious actors to manipulate the system's access control policies.
This vulnerability falls under the CWE-264 category of permissions, privileges, and access controls, specifically manifesting as an improper authorization check where the system fails to validate that users can only assign roles they are authorized to grant. The flaw enables privilege escalation through unauthorized role assignment, allowing attackers to elevate their privileges from standard user access to cluster-admin level access within their namespace. The technical implementation lacks proper validation of the roleRef field which should enforce role scope restrictions and verify that the requesting user possesses appropriate authorization levels for the target role.
The operational impact of this vulnerability extends beyond simple privilege escalation as it provides attackers with persistent control over the affected system. Once exploited, an attacker can maintain access across sessions and potentially move laterally within the cluster environment. The vulnerability affects the fundamental security model of the dashboard by undermining the namespace-based isolation that should protect against unauthorized access to privileged resources. This creates a significant risk for multi-tenant environments where users might attempt to gain control over other namespaces or system-level resources.
Mitigation strategies should focus on implementing strict validation of roleRef fields during RoleBinding creation, enforcing proper authorization checks that verify user permissions before allowing role assignment, and implementing comprehensive audit logging of all role binding operations. The system must validate that users can only assign roles within their authorized scope and that any attempt to assign highly privileged roles like cluster-admin requires additional verification steps. Organizations should implement regular security assessments of dashboard components and ensure proper segregation of duties within the authentication and authorization frameworks. The solution aligns with ATT&CK technique T1078 for valid accounts and T1548 for abuse of privileges, requiring defensive measures that monitor for anomalous role assignment patterns and enforce strict access control policies across all dashboard operations.