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.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in WPChill Remove Footer Credit allows Stored XSS.This issue affects Remove Footer Credit: from n/a through 1.0.13.

The Remove Footer Credit WordPress plugin before 1.0.11 does properly sanitise its settings, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed.

The Remove Footer Credit WordPress plugin before 1.0.6 does not have CSRF check in place when saving its settings, which could allow attacker to make logged in admins change them and lead to Stored XSS issue as well due to the lack of sanitisation