LearnPress – WordPress LMS Plugin <= 4.2.6.5 - Authenticated (Contributor+) Stored Cross-Site Scripting via layout_html Parameter

The LearnPress – WordPress LMS Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the ‘layout_html’ parameter in all versions up to, and including, 4.2.6.5 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.