GiveWP <= 2.25.2 - Cross-Site Request Forgery via give_ajax_store_payment_note

The GiveWP for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.25.2. This is due to missing or incorrect nonce validation on the give_ajax_store_payment_note function. This makes it possible for unauthenticated attackers to add donation notes via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.