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.

An issue was discovered in the MULTIDOTS Advance Search for WooCommerce plugin 1.0.9 and earlier for WordPress. This plugin is vulnerable to a stored Cross-site scripting (XSS) vulnerability. A non-authenticated user can save the plugin settings and inject malicious JavaScript code in the Custom CSS textarea field, which will be loaded on every site page.