Finale Lite < 2.18.1 - Cross-Site Request Forgery

Description

The Finale Lite – Sales Countdown Timer & Discount for WooCommerce plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 2.18.0. This is due to missing or incorrect nonce validation on the xlo_optin_call() function. This makes it possible for unauthenticated attackers to opt into tracking via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.