Missing Authorization vulnerability in xootix Waitlist Woocommerce ( Back in stock notifier ) allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Waitlist Woocommerce ( Back in stock notifier ): from n/a through 2.6.

The Waitlist Woocommerce ( Back in stock notifier ) plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg without appropriate escaping on the URL in all versions up to, and including, 2.7.5. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

The Login/Signup Popup ( Inline Form + Woocommerce ) plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'import_settings' function in versions 2.7.1 to 2.7.2. This makes it possible for authenticated attackers, with Subscriber-level access and above, to change arbitrary options on affected sites. This can be used to enable new user registration and set the default role for new users to Administrator.

The The Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro plugin for WordPress for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 5.3.1. This is due to the plugin for WordPress allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes.

The Login/Signup Popup, Waitlist Woocommerce ( Back in stock notifier ), and Side Cart Woocommerce (Ajax) WordPress plugins by XootiX are vulnerable to Cross-Site Request Forgery via the save_settings function found in the ~/includes/xoo-framework/admin/class-xoo-admin-settings.php file which makes it possible for attackers to update arbitrary options on a site that can be used to create an administrative user account and grant full privileged access to a compromised site. This affects versions <= 2.2 in Login/Signup Popup, versions <= 2.5.1 in Waitlist Woocommerce ( Back in stock notifier ), and versions <= 2.0 in Side Cart Woocommerce (Ajax).