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 WP Email Users WordPress plugin through 1.7.6 does not escape the data_raw parameter in the weu_selected_users_1 AJAX action, available to any authenticated users, allowing them to perform SQL injection attacks.