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Vulnerabilities CVE-2026-11964

CVE-2026-11964

None
Open
TLP:CLEAR

User Registration & Membership < 5.2.2 - Unauthenticated PayPal Webhook Signature Verification Bypass Leading to Membership Activation

NVD CVE.org
Critical Infrastructure

AI Analysis

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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.

Details

EPSS Score ⓘ
0.27%

20th percentile

Confidence
90%
Published
Jul 13, 2026
Last Modified
Jul 13, 2026
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