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.
References8
- access.redhat.com/errata/RHSA-2026:67516
- access.redhat.com/errata/RHSA-2026:67842
- access.redhat.com/errata/RHSA-2026:68515
- access.redhat.com/errata/RHSA-2026:71597
- access.redhat.com/errata/RHSA-2026:73038
- access.redhat.com/errata/RHSA-2026:73419
- access.redhat.com/security/cve/CVE-2026-71576
- bugzilla.redhat.com/show_bug.cgi?id=2512513
Metrics
- CVSS 3.1
-
8.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L - EPSS — exploit probability
- 0% percentile: 22 · as of 12 November 2026
- CWE
- CWE-345
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