CVE-2026-76351
Full vulnerability record from the local CVENow database.
Description
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.
Severity
HIGH
CVSS score
8.8
(v3.1)
Vulnerability status
Analyzed
Source identifier
Published
2026-08-19 22:17:20.070000
Last modified
2026-10-27 10:10:00.240000
View original CVE JSON
{
"id": "CVE-2026-76351",
"sourceIdentifier": "[email protected]",
"published": "2026-08-19T22:17:20.070",
"lastModified": "2026-10-27T10:10:00.240",
"vulnStatus": "Analyzed",
"cveTags": [],
"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 ’admin’ o ’power’ podría usar datos de notificación de informe manipulados para hacer que Splunk Secure Gateway envíe una solicitud a la API de Representational State Transfer (REST) de Splunk Enterprise usando un token de sesión a nivel de sistema y modificar la configuración de la plataforma Splunk. El usuario podría entonces obtener un token de sesión sin contraseña 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 notificación de informe decodificados antes de usarlos para construir solicitudes a la API REST de Splunk Enterprise."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Splunk",
"product": "Splunk Enterprise",
"modules": [
"Splunk Secure Gateway"
],
"versions": [
{
"version": "10.4",
"lessThan": "10.4.2",
"versionType": "custom",
"status": "affected"
},
{
"version": "10.2",
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"versionType": "custom",
"status": "affected"
},
{
"version": "10.0",
"lessThan": "10.0.9",
"versionType": "custom",
"status": "affected"
},
{
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}
]
},
{
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"product": "Splunk Secure Gateway",
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"versionType": "custom",
"status": "affected"
},
{
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"versionType": "custom",
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},
{
"version": "3.8",
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"versionType": "custom",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 2.8,
"impactScore": 5.9
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-08-20T00:00:00+00:00",
"id": "CVE-2026-76351",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
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{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-918"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
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{
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],
"references": [
{
"url": "https://advisory.splunk.com/advisories/SVD-2026-0801",
"source": "[email protected]",
"tags": [
"Vendor Advisory"
]
}
]
}