CVE-2026-76351

{"id": "CVE-2026-76351", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-76351", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-08-20T00:00:00+00:00"}}], "cvssMetricV31": [{"type": "Secondary", "source": "psirt@cisco.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "affected": [{"source": "psirt@cisco.com", "affectedData": [{"vendor": "Splunk", "modules": ["Splunk Secure Gateway"], "product": "Splunk Enterprise", "versions": [{"status": "affected", "version": "10.4", "lessThan": "10.4.2", "versionType": "custom"}, {"status": "affected", "version": "10.2", "lessThan": "10.2.6", "versionType": "custom"}, {"status": "affected", "version": "10.0", "lessThan": "10.0.9", "versionType": "custom"}, {"status": "affected", "version": "9.4", "lessThan": "9.4.14", "versionType": "custom"}]}, {"vendor": "Splunk", "product": "Splunk Secure Gateway", "versions": [{"status": "affected", "version": "3.10", "lessThan": "3.10.9", "versionType": "custom"}, {"status": "affected", "version": "3.9", "lessThan": "3.9.23", "versionType": "custom"}, {"status": "affected", "version": "3.8", "lessThan": "3.8.70", "versionType": "custom"}]}]}], "published": "2026-08-19T22:17:20.070", "references": [{"url": "https://advisory.splunk.com/advisories/SVD-2026-0801", "tags": ["Vendor Advisory"], "source": "psirt@cisco.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "psirt@cisco.com", "description": [{"lang": "en", "value": "CWE-918"}]}], "descriptions": [{"lang": "en", "value": "In Splunk Enterprise versions below 10.4.2, 10.2.6, 10.0.9, and 9.4.14, and Splunk Secure Gateway versions below 3.10.9, 3.9.23, and 3.8.70, a user who does not hold the \"admin\" or \"power\" Splunk roles could use crafted report notification data to cause Splunk Secure Gateway to send a request to the Splunk Enterprise Representational State Transfer (REST) API using a system-level session token and modify the Splunk platform configuration. The user could then obtain a session token without a password and use it to access all relevant data and affect system integrity. The vulnerability is possible because Splunk Secure Gateway does not validate decoded report notification identifiers before using them to construct requests to the Splunk Enterprise REST API."}, {"lang": "es", "value": "En las versiones de Splunk Enterprise anteriores a 10.4.2, 10.2.6, 10.0.9 y 9.4.14, y en las versiones de Splunk Secure Gateway anteriores a 3.10.9, 3.9.23 y 3.8.70, un usuario que no posee los roles de Splunk \u2019admin\u2019 o \u2019power\u2019 podr\u00eda usar datos de notificaci\u00f3n de informe manipulados para hacer que Splunk Secure Gateway env\u00ede una solicitud a la API de Representational State Transfer (REST) de Splunk Enterprise usando un token de sesi\u00f3n a nivel de sistema y modificar la configuraci\u00f3n de la plataforma Splunk. El usuario podr\u00eda entonces obtener un token de sesi\u00f3n sin contrase\u00f1a y usarlo para acceder a todos los datos relevantes y afectar la integridad del sistema. La vulnerabilidad es posible porque Splunk Secure Gateway no valida los identificadores de notificaci\u00f3n de informe decodificados antes de usarlos para construir solicitudes a la API REST de Splunk Enterprise."}], "lastModified": "2026-10-27T10:10:00.240", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "E180CC4C-5B8B-4D69-8535-93DCF3510119", "versionEndExcluding": "9.4.14", "versionStartIncluding": "9.4.0"}, {"criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "0FD75354-A6EE-49F9-9B8A-31287A845CFB", "versionEndExcluding": "10.0.9", "versionStartIncluding": "10.0.0"}, {"criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "C8FDA841-04BC-404C-B56D-7869CBD8B56C", "versionEndExcluding": "10.2.6", "versionStartIncluding": "10.2.0"}, {"criteria": "cpe:2.3:a:splunk:splunk:*:*:*:*:enterprise:*:*:*", "vulnerable": true, "matchCriteriaId": "209C1DE6-893D-424D-B103-B64A314AD8DC", "versionEndExcluding": "10.4.2", "versionStartIncluding": "10.4.0"}, {"criteria": "cpe:2.3:a:splunk:splunk_secure_gateway:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FC3EC4A6-9C00-49CB-92DC-97F21C4E1BC1", "versionEndExcluding": "3.8.70", "versionStartIncluding": "3.8.0"}, {"criteria": "cpe:2.3:a:splunk:splunk_secure_gateway:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "46A65041-64F2-4459-A7CB-947129FA9BEA", "versionEndExcluding": "3.9.23", "versionStartIncluding": "3.9.0"}, {"criteria": "cpe:2.3:a:splunk:splunk_secure_gateway:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "84D6A11D-4EA4-4D38-B8A1-4E0D2627B245", "versionEndExcluding": "3.10.9", "versionStartIncluding": "3.10.0"}], "operator": "OR"}]}], "sourceIdentifier": "psirt@cisco.com"}