CVE-2026-3198
MLflow 3.9.0 with basic-auth (`--app-name basic-auth`) fails to enforce authorization checks for multiple Gateway API 'list' endpoints. Specifically, the `BEFORE_REQUEST_HANDLERS` dictionary in `mlflow/server/auth/__init__.py` does not include entries for `ListGatewaySecretInfos`, `ListGatewayEndpoints`, and `ListGatewayModelDefinitions`. This allows any authenticated user, regardless of their assigned permissions, to enumerate all gateway secrets, endpoints, and model definitions. This vulnerability exposes sensitive information, such as API keys, endpoint configurations, and proprietary model definitions, to unauthorized users.
CVSS
- Versión: 3.0
- Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- Puntuación base: 6.5
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.36%
- Percentil entre todas las CVEs puntuadas: 27
- Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (1)
CWE
- CWE-284
Referencias
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-3198",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-3198",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-06-02T13:32:18.258552Z"
}
}
],
"cvssMetricV30": [
{
"type": "Secondary",
"source": "security@huntr.dev",
"cvssData": {
"scope": "UNCHANGED",
"version": "3.0",
"baseScore": 6.5,
"attackVector": "NETWORK",
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"integrityImpact": "NONE",
"userInteraction": "NONE",
"attackComplexity": "LOW",
"availabilityImpact": "NONE",
"privilegesRequired": "LOW",
"confidentialityImpact": "HIGH"
},
"impactScore": 3.6,
"exploitabilityScore": 2.8
}
]
},
"affected": [
{
"source": "security@huntr.dev",
"affectedData": [
{
"vendor": "mlflow",
"product": "mlflow/mlflow",
"versions": [
{
"status": "affected",
"version": "unspecified",
"versionType": "custom",
"lessThanOrEqual": "latest"
}
]
}
]
}
],
"published": "2026-06-02T04:17:03.397",
"references": [
{
"url": "https://huntr.com/bounties/e57db731-97d3-40c3-a429-831ee959807f",
"tags": [
"Exploit",
"Third Party Advisory"
],
"source": "security@huntr.dev"
},
{
"url": "https://huntr.com/bounties/e57db731-97d3-40c3-a429-831ee959807f",
"tags": [
"Exploit",
"Third Party Advisory"
],
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
}
],
"vulnStatus": "Analyzed",
"weaknesses": [
{
"type": "Secondary",
"source": "security@huntr.dev",
"description": [
{
"lang": "en",
"value": "CWE-284"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "MLflow 3.9.0 with basic-auth (`--app-name basic-auth`) fails to enforce authorization checks for multiple Gateway API 'list' endpoints. Specifically, the `BEFORE_REQUEST_HANDLERS` dictionary in `mlflow/server/auth/__init__.py` does not include entries for `ListGatewaySecretInfos`, `ListGatewayEndpoints`, and `ListGatewayModelDefinitions`. This allows any authenticated user, regardless of their assigned permissions, to enumerate all gateway secrets, endpoints, and model definitions. This vulnerability exposes sensitive information, such as API keys, endpoint configurations, and proprietary model definitions, to unauthorized users."
},
{
"lang": "es",
"value": "MLflow 3.9.0 con autenticación básica ('--app-name basic-auth') no aplica las comprobaciones de autorización para múltiples puntos finales list de la API de Gateway. Específicamente, el diccionario 'BEFORE_REQUEST_HANDLERS' en 'mlflow/server/auth/__init__.py' no incluye entradas para 'ListGatewaySecretInfos', 'ListGatewayEndpoints' y 'ListGatewayModelDefinitions'. Esto permite a cualquier usuario autenticado, independientemente de sus permisos asignados, enumerar todos los secretos, puntos finales y definiciones de modelos de la pasarela. Esta vulnerabilidad expone información sensible, como claves de API, configuraciones de puntos finales y definiciones de modelos propietarios, a usuarios no autorizados."
}
],
"lastModified": "2026-07-21T19:10:00.107",
"configurations": [
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:lfprojects:mlflow:3.9.0:-:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "454B4D36-BE89-42E7-A901-19B4DD7F4AC5"
}
],
"operator": "OR"
}
]
}
],
"sourceIdentifier": "security@huntr.dev"
}