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 Share This Image plugin for WordPress is vulnerable to Open Redirect in all versions up to, and including, 2.03. This is due to insufficient validation on the redirect url supplied via the link parameter. This makes it possible for unauthenticated attackers to redirect users to potentially malicious sites if they can successfully trick them into performing an action.

The ILLID Share This Image plugin before 1.04 for WordPress has XSS via the sharer.php url parameter.