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 Easy Social Like Box – Popup – Sidebar Widget plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'cardoza_facebook_like_box' shortcode in all versions up to, and including, 4.0 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Popup LikeBox Team Popup Like box allows Stored XSS.This issue affects Popup Like box: from n/a through 3.7.2.

The Popup Like box WordPress plugin before 3.6.1 does not sanitize and escape the ays_fb_tab parameter before outputting it back in an admin page, leading to a Reflected Cross-Site Scripting.