GTranslate < 2.9.7 - Reflected Cross-Site Scripting

The Translate WordPress with GTranslate WordPress plugin before 2.9.7 does not sanitise and escape the body parameter in the url_addon/gtranslate-email.php file before outputting it back in the page, leading to a Reflected Cross-Site Scripting issue. Note: exploitation of the issue requires knowledge of the NONCE_SALT and NONCE_KEY