The Broken Link Checker plugin for WordPress is vulnerable to unauthorized data access due to a missing capability check on the ajaxfullstatus and ajaxdashboardstatus functions in all versions up to, and including, 2.4.4. This makes it possible for authenticated attackers, with Subscriber-level access and above, to view the plugin's status.

The Broken Link Checker plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of addqueryarg in /app/admin-notices/features/class-view.php without appropriate escaping on the URL in all versions up to, and including, 2.4.0. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.