Multiple SQL injection vulnerabilities in the WonderPlugin Audio Player plugin before 2.1 for WordPress allow (1) remote authenticated users to execute arbitrary SQL commands via the item[id] parameter in a wonderplugin_audio_save_item action to wp-admin/admin-ajax.php or remote administrators to execute arbitrary SQL commands via the itemid parameter in the (2) wonderplugin_audio_show_item, (3) wonderplugin_audio_show_items, or (4) wonderplugin_audio_edit_item page to wp-admin/admin.php.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2015-2306
http://www.wonderplugin.com/wordpress-audio-player/
http://www.exploit-db.com/exploits/36086
http://security.szurek.pl/wonderplugin-audio-player-20-blind-sql-injection-and-xss.html