The Membership Plugin – Restrict Content plugin for WordPress is vulnerable to Missing Authentication in all versions up to, and including, 3.2.16 via the 'rcpstripecreatesetupintentforsavedcard' function due to missing capability check. Additionally, the plugin does not check a user-controlled key, which makes it possible for unauthenticated attackers to leak Stripe SetupIntent clientsecret values for any membership.