GoStats for WordPress <= 1.4 - Cross-Site Request Forgery via gostats_manage() Function

The GoStats for WordPress plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.4. This is due to missing or incorrect nonce validation on the gostats_manage() function. This makes it possible for unauthenticated attackers to update the plugin's settings (gostats_siteid and gostats_server options) via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.