CVE-2026-4100
HighSummary
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. Missing capability checks on AJAX handlers allow authenticated attackers with Subscriber-level access and above to delete, create, or rebuild the Stripe webhook, disrupting payment processing.
Risk Assessment
The organization may face serious issues with payment processing, subscription renewal synchronization, and cancellation and failed payment management, potentially leading to revenue loss.
Recommendation
It is recommended to update the Paid Memberships Pro plugin to the latest version and implement proper capability checks for AJAX handlers to prevent unauthorized modifications.
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Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

