source: https://www.securityfocus.com/bid/54039/info

The Organizer plugin for WordPress is prone to the following security vulnerabilities:

1. A cross-site scripting vulnerability.
2. An information-disclosure vulnerability.
3. A directory-traversal vulnerability.

Attackers may leverage these issues to steal cookie-based authentication credentials, execute arbitrary script code in the browser, or disclose sensitive information; other attacks are also possible.

Organizer 1.2.1 is vulnerable; other versions may also be affected. 

Directory-traversal vulnerability:

http://www.example.com/wp-admin/wp-admin/admin.php?page=organizer/page/view.php

Cross-site scripting vulnerability:

http://www.example.com/wp-admin/admin.php?page=organizer/page/dir.php
"><script>alert(document.cookie)</script>

Information-disclosure vulnerability:

http://www.example.com/wp-admin/admin.php?page=organizer/page/users.php