Medium [CVE-2026-71475] Spoke-controlled ClusterID injected unencoded into Insights API URL path

A flaw was found in insights-client. A compromised managed cluster, referred to as a 'spoke', can inject unencoded data into the Insights API URL path.

This occurs because the ClusterID, which is controlled by the spoke, is used directly in the request path without proper validation or URL encoding. This vulnerability allows a malicious spoke to redirect authenticated requests to unintended API endpoints, potentially leading to information disclosure or unauthorized access.

This vulnerability is rated as Moderate impact because exploiting it requires an attacker to already possess high privileges or full control over an enrolled managed spoke cluster.

Because manipulating the cluster identifier requires administrative tampering with spoke-side status claims, external unauthenticated actors cannot leverage this flaw directly against the hub or the Insights service. Red Hat severity: Moderate — CVSS 6.8 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N).

Weakness: CWE-22. Affected Red Hat products: Red Hat Advanced Cluster Management for Kubernetes 2.13; Red Hat Advanced Cluster Management for Kubernetes 2.14; Red Hat Advanced Cluster Management for Kubernetes 2.15; Red Hat Advanced Cluster Management for Kubernetes 2.16; Red Hat Advanced Cluster Management for Kubernetes 2.17.