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CVE-2026-11964

CRITICAL 9.1 CVSS 3.1
Published
July 13, 2026
Last modified
July 13, 2026
NVD status
Deferred
Reported by
contact@wpscan.com
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Description

The User Registration & Membership WordPress plugin before 5.2.2 does not verify the authenticity of incoming payment-provider webhook notifications before acting on them, allowing unauthenticated attackers to forge a payment-approved event and activate a paid membership subscription without completing a real payment.

Affected WordPress components

  • User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder Plugin · user-registration
    Confirmed match Active
    Before 5.2.2
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • Unknown User Registration & Membership — Before 5.2.2

References

  • wpscan.com https://wpscan.com/vulnerability/faf55649-8f76-4abf-a6b9-0d0774e22d29/
  • nvd.nist.gov Official NVD record