Fonts <= 3.7.7 - Cross-Site Request Forgery

The Fonts plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 3.7.7. This is due to missing or incorrect nonce validation on the manage_kits() function. This makes it possible for unauthenticated attackers to update settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.