{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-71576", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-08-07T14:20:37.114Z", "datePublished": "2026-08-10T16:41:53.193Z", "dateUpdated": "2026-08-10T16:41:53.193Z"}, "containers": {"cna": {"title": "Multicluster-global-hub: multicluster-global-hub: manager trusts self-asserted evt.source() for leaf-hub identity in all status handlers", "metrics": [{"other": {"content": {"value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/"}, "type": "Red Hat severity rating"}}, {"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 8.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L", "version": "3.1"}, "format": "CVSS"}], "descriptions": [{"lang": "en", "value": "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."}], "affected": [{"vendor": "Red Hat", "product": "Multicluster Global Hub", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "multicluster-globalhub/multicluster-globalhub-manager-rhel9", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:multicluster_globalhub"]}], "references": [{"url": "https://access.redhat.com/security/cve/CVE-2026-71576", "tags": ["vdb-entry", "x_refsource_REDHAT"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2512513", "name": "RHBZ#2512513", "tags": ["issue-tracking", "x_refsource_REDHAT"]}], "datePublic": "2026-08-10T14:38:00.000Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-345", "description": "Insufficient Verification of Data Authenticity", "lang": "en", "type": "CWE"}]}], "x_redhatCweChain": "CWE-345: Insufficient Verification of Data Authenticity", "workarounds": [{"lang": "en", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}], "timeline": [{"lang": "en", "time": "2026-08-07T00:00:00.000Z", "value": "Reported to Red Hat."}, {"lang": "en", "time": "2026-08-10T14:38:00.000Z", "value": "Made public."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-08-10T16:41:53.193Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

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