Cross-site scripting (XSS) vulnerability in sample-forms/simple-contact-form-with-preview/simple-contact-form-with-preview.html in MitriDAT eMail Form Processor Pro allows remote attackers to inject arbitrary web script or HTML via the base_path parameter, possibly related to (1) formprocessorpro.php in the PHP version of the product, and (2) formprocessorpro.pl in the Perl version of the product.