Sumo < 1.35 - Cross-Site Request Forgery

Description

The Sumo plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.34. This is due to missing or incorrect nonce validation on the ajax_sumo_add_woocommerce_coupon and ajax_sumo_remove_woocommerce_coupon functions. This makes it possible for unauthenticated attackers to add and remove coupons via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.