PT-2026-57632 · WordPress · User Registration & Membership

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CVE-2026-11964

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Published

2026-06-22

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Updated

2026-07-13

CVSS v3.1

9.1

Critical

VectorAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Name of the Vulnerable Software and Affected Versions User Registration & Membership WordPress plugin versions prior to 5.2.2
Description The plugin fails to verify the authenticity of incoming payment-provider webhook notifications. This allows unauthenticated attackers to forge a payment-approved event, enabling the activation of a paid membership subscription without completing an actual payment.
Recommendations Update the User Registration & Membership WordPress plugin to version 5.2.2 or later.

Exploit

Fix

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Related Identifiers

CVE-2026-11964

Affected Products

User Registration & Membership