Bug 2531596 (CVE-2026-89060)

Summary: CVE-2026-89060 stolostron/multicluster-observability-addon: Cross-namespace Secret disclosure in multicluster-observability-addon via unvalidated configuration references
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
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 cross-namespace authorization flaw in multicluster-observability-addon allows a user with permission to modify a managed cluster’s ManagedClusterAddOn configuration to reference ClusterLogForwarder or OpenTelemetryCollector resources outside the permitted namespace. If those resources reference Secrets, the add-on may copy the referenced Secrets to the attacker-controlled managed cluster.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-09-10 18:38:33 UTC
A flaw in multicluster-observability-addon allows a managed-cluster identity to reference configuration resources outside its permitted namespace. This may cause the add-on to disclose referenced hub Secrets to the attacker-controlled managed cluster.