High severity7.7NVD Advisory· Published Sep 11, 2026· Updated Sep 21, 2026
CVE-2026-89060
CVE-2026-89060
Description
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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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3(expand)+ 1 more
- (no CPE)
- (no CPE)
Patches
Vulnerability mechanics
References
8- access.redhat.com/errata/RHSA-2026:67539nvd
- access.redhat.com/errata/RHSA-2026:67540nvd
- access.redhat.com/errata/RHSA-2026:67541nvd
- access.redhat.com/errata/RHSA-2026:67542nvd
- access.redhat.com/errata/RHSA-2026:67543nvd
- access.redhat.com/security/cve/CVE-2026-89060nvd
- bugzilla.redhat.com/show_bug.cginvd
- github.com/stolostron/multicluster-observability-addon/pull/644nvd
News mentions
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