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OpenShift GitOps Vulnerability Allows Attackers to Escalate Privileges to Root

Red Hat has identified a security vulnerability in OpenShift GitOps, which could potentially allow authenticated users to gain full control of a cluster.

نBy نضال النعيمDec 17, 20251 min read

Red Hat has identified a security vulnerability in OpenShift GitOps, which could potentially allow authenticated users to gain full control of a cluster.

The vulnerability, designated as CVE-2025-13888, enables namespace administrators to escalate their privileges, possibly attaining root access to the system.

CVE ID: CVE-2025-13888 Vendor Severity: Important CVSS v3.1 Score: 9.1 (Critical) Attack Vector: Network (AV:N)

Although Red Hat classifies the severity as "Important," the vulnerability poses a significant risk in environments with untrusted namespace administrators.

Red Hat has identified a security vulnerability in OpenShift GitOps, which could potentially allow authenticated users to gain full control of a cluster.
نضال النعيم · Thehackingpost

The flaw originates from how OpenShift GitOps manages permissions for ArgoCD Custom Resources. Normally, namespace administrators are confined to their specific namespace. However, this issue allows them to create Custom Resources that manipulate the system into granting elevated permissions in other namespaces.

With elevated permissions, attackers can deploy privileged workloads on controller nodes, effectively gaining root access to the cluster. This could lead to bypassing security controls, accessing sensitive data, or operational disruptions. The attack vector is network-based, requiring valid namespace administrator credentials, which limits the threat to internal or compromised accounts.

Red Hat has issued security updates to address this vulnerability in supported OpenShift GitOps versions. The fix ensures proper permission validation when creating ArgoCD resources, preventing privilege escalation. Organizations using OpenShift GitOps versions 1.16, 1.17, or 1.18 should apply the patches promptly.

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Security teams are advised to audit cluster configurations and review users with namespace administrator privileges. Limiting and monitoring administrative access is crucial to mitigating this risk, alongside applying the security updates.

Based on reporting by GBHackers.

AI transparency. This article was produced with the assistance of artificial intelligence and published under human editorial oversight. AI systems can make mistakes. Read how we use AI (EU AI Act, Art. 50).
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