CVE-2026-20202

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"versionStartIncluding": "10.2.2510", "vulnerable": true}, {"criteria": "cpe:2.3:a:splunk:splunk_cloud_platform:*:*:*:*:*:*:*:*", "matchCriteriaId": "29253EBC-0E89-46ED-B504-E81F5D4E7E3F", "versionEndExcluding": "10.3.2512.6", "versionStartIncluding": "10.3.2512", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "In Splunk Enterprise versions below 10.2.2, 10.0.5, 9.4.10, and 9.3.11, and Splunk Cloud Platform versions below 10.4.2603.0, 10.3.2512.6, 10.2.2510.10, 10.1.2507.20, 10.0.2503.13, and 9.3.2411.127, a user who holds a role that contains the high-privilege capability `edit_user`could create a specially crafted username that includes a null byte or a non-UTF-8 percent-encoded byte due to improper input validation.<br><br>This could lead to inconsistent conversion of usernames into a proper format for storage and account management inconsistencies, such as being unable to edit or delete affected users."}, {"lang": "es", "value": "En las versiones de Splunk Enterprise anteriores a 10.2.2, 10.0.5, 9.4.10 y 9.3.11, y las versiones de Splunk Cloud Platform anteriores a 10.4.2603.0, 10.3.2512.6, 10.2.2510.10, 10.1.2507.20, 10.0.2503.13 y 9.3.2411.127, un usuario con un rol que contiene la capacidad de alto privilegio \u2019edit_user\u2019 podr\u00eda crear un nombre de usuario especialmente dise\u00f1ado que incluye un byte nulo o un byte codificado en porcentaje no UTF-8 debido a una validaci\u00f3n de entrada incorrecta.\n\nEsto podr\u00eda llevar a una conversi\u00f3n inconsistente de los nombres de usuario a un formato adecuado para el almacenamiento y a inconsistencias en la gesti\u00f3n de cuentas, como la imposibilidad de editar o eliminar usuarios afectados."}], "id": "CVE-2026-20202", "lastModified": "2026-10-26T22:10:00.163", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.6, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 0.7, "impactScore": 5.9, "source": "psirt@cisco.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-20202", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-04-15T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-04-15T16:16:34.120", "references": [{"source": "psirt@cisco.com", "tags": ["Vendor Advisory"], "url": "https://advisory.splunk.com/advisories/SVD-2026-0401"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-176"}], "source": "psirt@cisco.com", "type": 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{}

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