Accordion <= 2.2.8 is vulnerable to Unprotected AJAX Action leading to Stored/Reflected Cross-Site Scripting (XSS) vulnerability

An issue was discovered in the Accordion plugin before 2.2.9 for WordPress. The unprotected AJAX wp_ajax_accordions_ajax_import_json action allowed any authenticated user with Subscriber or higher permissions the ability to import a new accordion and inject malicious JavaScript as part of the accordion.