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.
Metrics
Affected Vendors & Products
References
History
Thu, 16 Jul 2026 10:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-284 CWE-307 |
Tue, 14 Jul 2026 23:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-640 |
Mon, 13 Jul 2026 18:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Weaknesses | CWE-640 |
Mon, 13 Jul 2026 16:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
cvssV3_1
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Mon, 13 Jul 2026 06:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | User Registration & Membership < 5.2.2 - Unauthenticated PayPal Webhook Signature Verification Bypass Leading to Membership Activation | |
| References |
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Status: PUBLISHED
Assigner: WPScan
Published: 2026-07-13T06:00:01.573Z
Updated: 2026-07-13T15:52:54.768Z
Reserved: 2026-06-11T08:46:05.907Z
Link: CVE-2026-11964
Updated: 2026-07-13T15:52:50.463Z
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