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Para validar la existencia de la clase solicitada antes de usarlas, Graylog carga la clase usando el cargador de clases. Si un usuario con los permisos adecuados realiza la solicitud, se pueden crear instancias de clases arbitrarias con constructores String de 1 argumento. Esto ejecutar\u00e1 c\u00f3digo arbitrario que se ejecuta durante la creaci\u00f3n de instancias de clase. En el caso de uso espec\u00edfico de `java.io.File`, el comportamiento de la pila interna del servidor web provocar\u00e1 la exposici\u00f3n de la informaci\u00f3n al incluir todo el contenido del archivo en la respuesta a la solicitud REST. 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