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CVE-2023-6449

Estado: ModificadaAlta (7.2)—

The Contact Form 7 plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation in the 'validate' function and insufficient blocklisting on the 'wpcf7_antiscript_file_name' function in versions up to, and including, 5.8.3. This makes it possible for authenticated attackers with editor-level capabilities or above to upload arbitrary files on the affected site's server, but due to the htaccess configuration, remote code cannot be executed in most cases. By default, the file will be deleted from the server immediately.

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However, in some cases, other plugins may make it possible for the file to live on the server longer. This can make remote code execution possible when combined with another vulnerability, such as local file inclusion.

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)

Rocklobster — Contact Form 7

CWE

Referencias

JSON original (NVD)

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    },
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      "lang": "es",
      "value": "El complemento Contact Form 7 para WordPress es vulnerable a cargas de archivos arbitrarias debido a una validación insuficiente del tipo de archivo en la función 'validar' y a una lista de bloqueo insuficiente en la función 'wpcf7_antiscript_file_name' en versiones hasta la 5.8.3 incluida. Esto hace posible que atacantes autenticados con capacidades de nivel de editor o superior carguen archivos arbitrarios en el servidor del sitio afectado, pero debido a la configuración de htaccess, el código remoto no se puede ejecutar en la mayoría de los casos. De forma predeterminada, el archivo se eliminará del servidor inmediatamente. Sin embargo, en algunos casos, otros complementos pueden hacer posible que el archivo permanezca más tiempo en el servidor. Esto puede hacer posible la ejecución remota de código cuando se combina con otra vulnerabilidad, como la inclusión de archivos locales."
    }
  ],
  "lastModified": "2026-06-17T06:50:46.813",
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