What the vulnerability does
01Description
The Paid Memberships Pro plugin for WordPress is vulnerable to unauthorized modification and disruption of Stripe webhook configuration in all versions up to, and including, 3.6.5. This is due to missing capability checks on the `wp_ajax_pmpro_stripe_create_webhook`, `wp_ajax_pmpro_stripe_delete_webhook`, and `wp_ajax_pmpro_stripe_rebuild_webhook` AJAX handlers. This makes it possible for authenticated attackers, with Subscriber-level access and above, to delete, create, or rebuild the site's Stripe webhook, disrupting all payment processing, subscription renewal synchronization, cancellation handling, and failed payment management.
Explanation of Vulnerability in Simple Terms
02Summary
Paid Memberships Pro versions up to 3.6.5 lack proper authorization checks, allowing authenticated users with low privileges to modify site content and disrupt service availability. An attacker with a basic user account can alter pages or posts and cause the site to become unavailable. Site administrators should update immediately to a version newer than 3.6.5.
What an attacker can do
03Attacker Capabilities
Modify site content and make the site unavailable.
Potential impact on your site
04Site Impact
Unauthorized users can deface content and cause downtime; site availability and integrity are at risk.
Conditions required to exploit
05Prerequisites
Attacker needs a low-privilege user account on the site.
Key dates
06Disclosure timeline
May 2, 2026
CVE published
May 4, 2026
Record updated
