CVE-2026-70496

9.9

Red Hat · Advanced Cluster Management for Kubernetes

A flaw in the search-v2-operator allows for privilege escalation due to a ClusterRole granting excessive permissions, including the ability to manage RBAC configurations and approve CSRs.

Executive summary

A critical privilege escalation vulnerability exists in the Red Hat Advanced Cluster Management search-v2-operator that could allow an attacker to gain cluster administrator privileges.

Vulnerability

This vulnerability is an instance of CWE-250, where the operator utilizes a ClusterRole with excessive permissions. An authenticated attacker with low privileges can leverage this misconfiguration to impersonate entities, modify RBAC rules, and manage critical cluster resources.

Business impact

Successful exploitation of this vulnerability could lead to a complete compromise of the Kubernetes cluster environment. Given the CVSS score of 9.9, the impact on confidentiality, integrity, and availability is total, potentially resulting in unauthorized data access, service disruption, and the loss of entire containerized workloads.

Remediation

Immediate Action: Consult the official Red Hat security advisory to identify and apply the latest security updates or configuration workarounds for the search-v2-operator.

Proactive Monitoring: Monitor Kubernetes audit logs for suspicious activities related to RBAC changes, CSR approvals, and unauthorized use of the search-v2-operator service account.

Compensating Controls: Implement restrictive network policies and limit the scope of service accounts to adhere to the principle of least privilege, reducing the potential impact of a compromised operator.

Exploitation status

Public Exploit Available: No

Analyst recommendation

This vulnerability represents a severe risk to cluster security. Administrators should prioritize reviewing the security advisory provided by Red Hat and apply all necessary updates or hardening steps to restrict the operator's privileges immediately.

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