Is CVE-2026-71576 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-71576?

CVE-2026-71576 has a CVSS v3 severity of HIGH (8.5).

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CVE-2026-71576

Description

A flaw was found in multicluster-global-hub. The manager component improperly validates the source identity of incoming CloudEvents on Kafka status topics. A remote attacker, after compromising a managed hub and obtaining its Kafka client certificate, can manipulate the self-asserted source identity. This allows the attacker to falsify or delete critical data, such as compliance, inventory, and cluster health information, belonging to other hubs in the database.