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Critical · 9.9 CVE-2026-67567 EUVD-2026-63589GHSA-gf3r-gm67-jgrv

Multicloud-operators-subscription: multicloud-operators-subscription: helmrelease chart applied with controller sa without gvk or namespace restriction

Published Aug 20, 2026 · Updated Sep 5, 2026 · Assigned by redhat

Description

A flaw was found in the multicloud-operators-subscription component. This vulnerability allows a tenant, who has the ability to create HelmRelease custom resources (CRs), to bypass existing security controls. The system's HelmRelease controller processes Helm chart templates using its own elevated ServiceAccount privileges without proper validation. This enables the tenant to deploy arbitrary resources across the entire cluster, leading to a significant security compromise.

Affected products

VendorProductAffectedFixed
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.11 — —
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.13 — —
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.14 — —
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.15 — —
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.16 — —
Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.17 — —

References