Membership Plugin – Restrict Content <= 3.2.16 - Missing Authentication to Insecure Direct Object Reference and Sensitive Information Exposure

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 'rcp_stripe_create_setup_intent_for_saved_card' 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 client_secret values for any membership.