Author Bio Box < 3.4.0 - Admin+ Stored Cross-Site Scripting

The plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and sanitization via several parameters found in the ~/includes/admin/class-author-bio-box-admin.php file which allowed attackers with administrative user access to inject arbitrary web scripts. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.