CVE-2026-67567
Multicloud-operators-subscription: multicloud-operators-subscription: helmrelease chart applied with controller sa without gvk or namespace restriction
- State
- Published
- Severity
- 9.9 Critical
- Published
- Aug 20, 2026
- Updated
- Sep 5, 2026
- Reserved
- Aug 11, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.9 Critical | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H | redhat |
Weaknesses
- CWE-441 Unintended Proxy or Intermediary ('Confused Deputy')
Affected Products
| Product | Versions |
|---|---|
Red Hat Advanced Cluster Management for Kubernetes 2.11Red Hat |
|
Red Hat Advanced Cluster Management for Kubernetes 2.13Red Hat |
|
Red Hat Advanced Cluster Management for Kubernetes 2.14Red Hat |
|
Red Hat Advanced Cluster Management for Kubernetes 2.15Red Hat |
|
Red Hat Advanced Cluster Management for Kubernetes 2.16Red Hat |
|
Red Hat Advanced Cluster Management for Kubernetes 2.17Red Hat |
|
References
- RHSA-2026:60386vendor-advisory
- RHSA-2026:60387vendor-advisory
- RHSA-2026:60388vendor-advisory
- RHSA-2026:60389vendor-advisory
- RHSA-2026:60390vendor-advisory
- RHSA-2026:60391vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-67567vdb-entry
- RHBZ#2514224issue-tracking
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