The Announcement & Notification Banner – Bulletin plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg and remove_query_arg without appropriate escaping on the URL in all versions up to, and including, 3.11.7. 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.

The Freemius SDK, as used by hundreds of WordPress plugin and theme developers, was vulnerable to Cross-Site Request Forgery and Information disclosure due to missing capability checks and nonce protection on the _get_debug_log, _get_db_option, and the _set_db_option functions in versions up to, and including 2.4.2. Any WordPress plugin or theme running a version of Freemius less than 2.4.3 is vulnerable.