CVE-2026-21886

{"id": "CVE-2026-21886", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.1, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 5.2, "exploitabilityScore": 2.8}]}, "published": "2026-03-17T16:16:19.953", "references": [{"url": "https://github.com/OpenCTI-Platform/opencti/security/advisories/GHSA-mhmx-j75v-2m6x", "tags": ["Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-285"}, {"lang": "en", "value": "CWE-566"}, {"lang": "en", "value": "CWE-915"}]}], "descriptions": [{"lang": "en", "value": "OpenCTI is an open source platform for managing cyber threat intelligence knowledge and observables. Prior to version 6.9.1, the GraphQL mutations \"IndividualDeletionDeleteMutation\" is intended to allow users to delete individual entity objects respectively. However, it was observed that this mutation can be misused to delete unrelated and sensitive objects such as analyses reports etc. This behavior stems from the lack of validation in the API to ensure that the targeted object is contextually related to the mutation being executed. Version 6.9.1 fixes the issue."}, {"lang": "es", "value": "OpenCTI es una plataforma de c\u00f3digo abierto para gestionar conocimiento de inteligencia de amenazas cibern\u00e9ticas y observables. Antes de la versi\u00f3n 6.9.1, la mutaci\u00f3n de GraphQL 'IndividualDeletionDeleteMutation' est\u00e1 destinada a permitir a los usuarios eliminar objetos de entidad individuales respectivamente. Sin embargo, se observ\u00f3 que esta mutaci\u00f3n puede ser mal utilizada para eliminar objetos no relacionados y sensibles, como informes de an\u00e1lisis, etc. Este comportamiento se deriva de la falta de validaci\u00f3n en la API para asegurar que el objeto objetivo est\u00e9 contextualmente relacionado con la mutaci\u00f3n que se est\u00e1 ejecutando. La versi\u00f3n 6.9.1 corrige el problema."}], "lastModified": "2026-03-19T19:33:27.520", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:citeum:opencti:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "770FF6DC-74FC-4739-8A2E-A554D43CF7A9", "versionEndExcluding": "6.9.1"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}