Directory traversal vulnerability in the TheCartPress eCommerce Shopping Cart (aka The Professional WordPress eCommerce Plugin) plugin for WordPress before 1.3.9.3 allows remote administrators to read arbitrary files via a .. (dot dot) in the tcp_box_path parameter in the checkout_editor_settings page to wp-admin/admin.php.
https://wordpress.org/plugins/thecartpress/changelog/
http://www.securityfocus.com/bid/74395
http://www.securityfocus.com/archive/1/535396/100/0/threaded