The HTML5 Audio Player- Best WordPress Audio Player Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's widgets in all versions up to, and including, 2.2.19 due to insufficient input sanitization and output escaping on user supplied attributes. 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.

The Advanced Post Block – Display Posts, Pages, or Custom Posts on Your Page plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the apbPosts() function hooked via an AJAX action in all versions up to, and including, 1.13.1. This makes it possible for unauthenticated attackers to retrieve all post data, including those that may be password protected.