Multiple cross-site scripting (XSS) vulnerabilities in the wp_ajax_save_item function in wonderpluginaudio.php in the WonderPlugin Audio Player plugin before 2.1 for WordPress allow remote attackers to inject arbitrary web script or HTML via the (1) item[name] or (2) item[customcss] parameter in a wonderplugin_audio_save_item action to wp-admin/admin-ajax.php or the itemid parameter in the (3) wonderplugin_audio_show_item or (4) wonderplugin_audio_edit_item page to wp-admin/admin.php.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2015-2325
http://www.wonderplugin.com/wordpress-audio-player/
http://www.securityfocus.com/bid/74851
http://www.exploit-db.com/exploits/36086
http://security.szurek.pl/wonderplugin-audio-player-20-blind-sql-injection-and-xss.html