WP User Manager < 2.9.11 - Cross-Site Request Forgery

Description

The WP User Manager plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.9.10. This is due to missing or incorrect nonce validation on the fix_data_installation() function. This makes it possible for unauthenticated attackers to fix data installation via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.