CVE-2026-18949 in OpenShift AI
Summary
by MITRE • 08/11/2026
A flaw was found in odh-dashboard. This vulnerability allows an attacker, who has compromised the dashboard's Service Account (SA) token, to exploit overly broad permissions granted to the SA. This enables the attacker to escalate their privileges to cluster-administrator level, gain access to sensitive data like credentials and keys across the entire cluster, and disrupt multi-tenant isolation.
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Analysis
by VulDB Data Team • 08/11/2026
This vulnerability resides within the odh-dashboard component where insufficient privilege separation allows for excessive permission delegation through the Service Account token mechanism. The flaw represents a critical authorization bypass that enables attackers who have already compromised a dashboard service account to escalate their privileges to full cluster-administrator status. The security weakness stems from overly permissive role bindings and cluster roles that grant the dashboard service account unnecessary broad access rights beyond its operational requirements. This misconfiguration creates a path for privilege escalation that directly violates the principle of least privilege, as defined by the cloud security alliance and aligned with cwe-250.
The technical exploitation occurs when an attacker gains access to the dashboard Service Account token through various attack vectors including credential theft, lateral movement, or compromised workloads. Once obtained, the attacker can leverage these elevated permissions to perform cluster-wide operations such as creating, modifying, or deleting resources across all namespaces within the kubernetes cluster. The vulnerability specifically enables access to sensitive data stores including secrets, configmaps, and other credential repositories that contain authentication tokens, API keys, and cryptographic materials. This breach of multi-tenant isolation allows attackers to access resources belonging to other users or applications within the same cluster, effectively eliminating the security boundaries that should exist between different workloads.
The operational impact of this vulnerability extends beyond simple privilege escalation to include complete cluster compromise and potential data exfiltration across multiple tenants. Attackers can manipulate cluster resources, deploy malicious workloads, modify network policies, and access confidential information stored in various namespaces. The disruption to multi-tenant isolation represents a fundamental security failure that compromises the integrity and confidentiality of the entire containerized environment. According to the mitre attack framework, this vulnerability maps to privilege escalation techniques and credential access patterns that enable lateral movement throughout the cluster infrastructure.
Mitigation strategies should focus on implementing strict role-based access control with minimal required permissions for the dashboard service account. Organizations must review and tighten Service Account role bindings to ensure that only necessary cluster roles are granted, typically limiting access to specific namespaces and resource types relevant to the dashboard functionality. The implementation of pod security policies, network segmentation, and enhanced monitoring for unusual service account token usage should be deployed. Additionally, regular privilege audits, just-in-time access provisioning, and the use of tools like kubernetes rbac enforcement mechanisms can help prevent similar vulnerabilities from being exploited in the future.