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Vulnerabilities CVE-2026-71576

CVE-2026-71576

High
Open
TLP:CLEAR

Multicluster-global-hub: multicluster-global-hub: manager trusts self-asserted evt.source() for leaf-hub identity in all status handlers

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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.

Details

CVSS Score
8.5
EPSS Score
0.12%

2.4th percentile

CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L
Confidence
90%
Published
Aug 10, 2026
Last Modified
Aug 12, 2026
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