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 Simple Social Media Share Buttons WordPress plugin before 5.1.1 leaks password-protected post content to unauthenticated visitors in some meta tags

The Simple Social Media Share Buttons WordPress plugin before 3.2.4 does not escape the Share Title settings before outputting it in the frontend pages or posts (depending on the settings used), allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed.

The Simple Social Media Share Buttons – Social Sharing for Everyone WordPress plugin before 3.2.3 did not escape the align and like_button_size parameters of its SSB shortcode, which could allow users with a role as low as Contributor to perform Stored Cross-Site Scripting attacks.