Unauthorized Access Vulnerability in Paid Memberships Pro Plugin for WordPress
CVE-2026-4100

7.1HIGH

Key Information:

Vendor

WordPress
Status
Paid Memberships Pro – Content Restriction, User Registration, & Paid Subscriptions
Vendor
CVE Published:
2 May 2026

What is CVE-2026-4100?

The Paid Memberships Pro plugin for WordPress is susceptible to unauthorized modifications, allowing attackers with Subscriber-level access and above to manipulate the Stripe webhook settings. Specifically, these vulnerabilities stem from the absence of necessary capability checks in several AJAX handlers including wp_ajax_pmpro_stripe_create_webhook, wp_ajax_pmpro_stripe_delete_webhook, and wp_ajax_pmpro_stripe_rebuild_webhook. This oversight can lead to significant disruptions in payment processing, subscription management, and handling of failed transactions.

Affected Version(s)

Paid Memberships Pro – Content Restriction, User Registration, & Paid Subscriptions 0 <= 3.6.5

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://github.com/strangerstudios/paid-memberships-pro/p...

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jared Reyes
.