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CVE-2024-24762

Estado: AnalizadaAlta (7.5)—

`python-multipart` is a streaming multipart parser for Python. When using form data, `python-multipart` uses a Regular Expression to parse the HTTP `Content-Type` header, including options. An attacker could send a custom-made `Content-Type` option that is very difficult for the RegEx to process, consuming CPU resources and stalling indefinitely (minutes or more) while holding the main event loop. This means that process can't handle any more requests, leading to regular expression denial of service. This vulnerability has been patched in version 0.0.7.

CVSS

Probabilidad de explotación (EPSS)

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)

Fastapiexpert — Python-multipart

CWE

Referencias

JSON original (NVD)

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          "value": "CWE-400"
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      "value": "`python-multipart` is a streaming multipart parser for Python. When using form data, `python-multipart` uses a Regular Expression to parse the HTTP `Content-Type` header, including options. An attacker could send a custom-made `Content-Type` option that is very difficult for the RegEx to process, consuming CPU resources and stalling indefinitely (minutes or more) while holding the main event loop. This means that process can't handle any more requests, leading to regular expression denial of service. This vulnerability has been patched in version 0.0.7."
    },
    {
      "lang": "es",
      "value": "FastAPI es un framework web para crear API con Python 3.8+ basado en sugerencias de tipo estándar de Python. Cuando se utilizan datos de formulario, `python-multipart` usa una expresión regular para analizar el encabezado HTTP `Content-Type`, incluidas las opciones. Un atacante podría enviar una opción de \"Tipo de contenido\" personalizada que es muy difícil de procesar para RegEx, consumiendo recursos de CPU y deteniéndose indefinidamente (minutos o más) mientras se mantiene el bucle de evento principal. Esto significa que el proceso no puede manejar más solicitudes. Es un ReDoS (expresión regular de denegación de servicio), solo se aplica a aquellos que leen datos del formulario usando `python-multipart`. Esta vulnerabilidad ha sido parcheada en la versión 0.109.0."
    }
  ],
  "lastModified": "2026-06-17T07:14:48.490",
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