Critical [CVE-2026-67567] HelmRelease chart applied with controller SA without GVK or namespace restriction
This critical-severity Red Hat Linux advisory covers CVE-2026-67567 affecting Red Hat Advanced Cluster Management for Kubernetes 2.
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Summary
HelmRelease chart applied with controller SA without GVK or namespace restriction. Red Hat rates this important (CVSS 9.9).
Weakness: CWE-441.
Affected product named by the advisory: Red Hat Advanced Cluster Management for Kubernetes 2.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Mitigation checklist
- To mitigate this issue, restrict the ability of untrusted tenants to create `HelmRelease` custom resources within the cluster. Implement strict Role-Based Access Control (RBAC) policies to limit which users or service accounts can create or modify `HelmRelease` objects. This will prevent unauthorized users from leveraging the controller's elevated privileges for cluster-wide resource deployment.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
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