CVE-2026-76827

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This vulnerability allows a registered and authenticated managed cluster to tamper with or delete another cluster's indexed search data. This is possible because the delta-sync write paths in search-indexer do not properly restrict UPDATE/DELETE operations to data owned by the calling cluster. An attacker could exploit this by crafting specific user identifiers (UIDs) with a different cluster's prefix."}, {"lang": "es", "value": "Se encontr\u00f3 una falla en search-indexer. Esta vulnerabilidad permite a un cl\u00faster gestionado registrado y autenticado manipular o eliminar los datos de b\u00fasqueda indexados de otro cl\u00faster. Esto es posible porque las rutas de escritura de sincronizaci\u00f3n delta en search-indexer no restringen adecuadamente las operaciones de ACTUALIZACI\u00d3N/ELIMINACI\u00d3N a los datos propiedad del cl\u00faster que realiza la llamada. Un atacante podr\u00eda explotar esto al crear identificadores de usuario espec\u00edficos (UIDs) con el prefijo de un cl\u00faster diferente."}], "id": "CVE-2026-76827", "lastModified": "2026-10-26T10:10:00.140", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 4.0, "source": "secalert@redhat.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-76827", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-21T16:49:03.822112Z", "version": "2.0.3"}}]}, "published": "2026-08-19T21:17:39.227", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:60386"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:60387"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:60388"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:60389"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:60390"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/errata/RHSA-2026:60391"}, {"source": "secalert@redhat.com", "url": "https://access.redhat.com/security/cve/CVE-2026-76827"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2519896"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-693"}], "source": "secalert@redhat.com", "type": "Secondary"}]}

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