Sammy Forgit has discovered a vulnerability in the PDW File Browser plugin for WordPress, which can be exploited by malicious people to compromise a vulnerable system.
The vulnerability is caused due to the wp-content/plugins/pdw-file-browser/pdw_file_browser/swfupload/upload.php script improperly validating the extension of an uploaded file. This can be exploited to execute arbitrary PHP code by uploading a PHP file with an appended ".jpg", ".gif", or ".png" file extension.
Successful exploitation requires that Apache is not configured to handle the mime-type for media files with a ".jpg", ".gif", or ".png" extension (Configured to handle by default).
The vulnerability is confirmed in version 1.1. Other versions may also be affected.