Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue < 3.1.83 - Cross-Site Request Forgery

Description

The Newsletter, SMTP, Email marketing and Subscribe forms by Sendinblue plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 3.1.82. This is due to missing or incorrect nonce validation on the process_bulk_action() function. This makes it possible for unauthenticated attackers to perform bulk actions on forms via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.