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.
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.