Posts Navigation Links for Sections and Headings - Free by WP Masters <= 1.0.1 - Cross-Site Request Forgery to Settings Update

The Posts Navigation Links for Sections and Headings – Free by WP Masters plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0.1. This is due to missing or incorrect nonce validation on the 'wpm_navigation_links_settings' page. This makes it possible for unauthenticated attackers to update the plugin's settings via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.