source: http://www.securityfocus.com/bid/67954/info

JW Player for Flash & HTML5 Video is a Plugin for WordPress is prone to a cross-site request-forgery vulnerability.

Exploiting this issue may allow a remote attacker to perform certain unauthorized actions. This may lead to further attacks.

JW Player for Flash & HTML5 Video 2.1.3 is vulnerable; other versions may also be affected. 

http://www.example.com/wp-admin/admin.php?page=jwp6_menu&player_id=1&action=delete