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.

The Header Footer Code Manager Pro plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via the message parameter in all versions up to, and including, 1.0.16 due to insufficient input sanitization and output escaping. 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.

Cross-Site Request Forgery (CSRF) vulnerability in 99robots Header Footer Code Manager plugin <= 1.1.34 versions.

The Header Footer Code Manager WordPress plugin before 1.1.24 does not escape generated URLs before outputting them back in attributes in an admin page, leading to a Reflected Cross-Site Scripting.

The Header Footer Code Manager plugin <= 1.1.16 for WordPress is vulnerable to Reflected Cross-Site Scripting (XSS) via the $_REQUEST['page'] parameter.

The Header Footer Code Manager WordPress plugin before 1.1.14 does not validate and escape the "orderby" and "order" request parameters before using them in a SQL statement when viewing the Snippets admin dashboard, leading to SQL injections