GiveWP < 2.33.4 - Cross-Site Request Forgery to plugin installation

Description

The GiveWP plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 2.33.3. This is due to missing or incorrect nonce validation on the give_sendwp_remote_install_handler function. This makes it possible for unauthenticated attackers to install and activate the SendWP plugin via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.