CVE-2026-9242mediumCWE-345

CVE-2026-9242: medium-severity vulnerability in metagauss RegistrationMagic – Custom…

RegistrationMagic <= 6.0.8.6 - Authenticated (Subscriber+) Authentication Bypass via Forged PayPal IPN Request

Published 27 Jun 2026 · Updated 29 Jun 2026

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13Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 5.3epss 0.3%

The RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login plugin for WordPress is vulnerable to Authentication Bypass via Insufficient Verification of Data Authenticity in all versions up to and including 6.0.8.6. This is due to the PayPal IPN `callback` handler being registered as a nopriv AJAX action with no authentication or nonce requirement, and critically because the handler updates the payment log database row with attacker-controlled POST data — including `payment_status` and the `custom` field encoding the target `user_id` — before PayPal IPN validation is performed, meaning the database remains poisoned even when validation subsequently fails. This makes it possible for unauthenticated attackers to authenticate as any WordPress user, including administrators, by submitting a forged IPN request that overwrites a payment log entry's `user_id` with that of a target account, then visiting the success return URL with a legitimately obtained security hash to cause the plugin to issue real WordPress authentication cookies for the targeted account.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected products

metagauss · RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login

Related CVEs — metagauss RegistrationMagic – Custom…

In the same product, most dangerous first.

CVE-2025-15403CRITICALRegistrationMagic <= 6.0.7.1 - Unauthenticated Privilege Escalation via admin_orderEPSS 1.7%CVE-2024-10508CRITICALRegistrationMagic – User Registration Plugin with Custom Registration Forms <= 6.0.2.6 - Unauthenticated Privilege Escalation via Password RecoveryEPSS 1.5%CVE-2023-2499CRITICALRegistrationMagic <= 5.2.1.0 - Authentication BypassEPSS 1.3%CVE-2024-1991HIGHRegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login <= 5.3.0.0 - Authenticated (Subscriber+) Privilege EscalationEPSS 0.9%CVE-2024-1990HIGHRegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login <= 5.3.1.0 - Authenticated (Contributor+) SQL Injection via ShortcodeEPSS 0.8%CVE-2023-2548MEDIUMRegistrationMagic <= 5.2.0.5 - Authenticated (Admin+) Insecure Direct Object Reference to Arbitrary User Password ChangeEPSS 0.7%

References