Bug 2514227 (CVE-2026-72526)

Summary: CVE-2026-72526 multicloud-integrations: multicloud-integrations: pull-model propagation allows hub tenant to target arbitrary spoke cluster via unvalidated ocm-managed-cluster annotation
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: gparvin, rhaigner
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the multicloud-integrations component. The Application propagation controller processes the `ocm-managed-cluster` annotation from an Application Custom Resource (CR) without proper validation. A tenant with permissions to create Applications on the hub cluster can exploit this to target arbitrary managed clusters. This can force ArgoCD on the spoke clusters to synchronize attacker-controlled manifests, leading to arbitrary code execution or privilege escalation on those clusters.
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Description OSIDB Bzimport 2026-08-11 17:38:43 UTC 
A flaw was found in the multicloud-integrations component of Red Hat Advanced Cluster Management (RHACM). The Application propagation controller takes the tenant-controlled ocm-managed-cluster annotation verbatim from an Application CR and uses it as the ManifestWork namespace without authorization checks. The only validation is a bare existence check on the target ManagedCluster. A tenant with Application create permissions in any hub namespace can generate ManifestWorks targeting arbitrary managed clusters, resulting in spoke cluster-admin ArgoCD syncing attacker-controlled manifests.

Upstream repo: https://github.com/stolostron/multicloud-integrations
Audited commit: d88a168
Jira tracker: ACM-38643