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Medium

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

  • Disclosed: 26.06.2026
  • Updated: 11.10.2026 10:22

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.

Affected software

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PlatformPackageVulnerable versionsFixed in
WordPress plugin RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login <= 6.0.8.6 6.0.8.7

References

CVSS score 5.3/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness (CWE)
CWE-345
Platform
WordPress
Package
RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login
Disclosed
26.06.2026
Updated
11.10.2026 10:22

Sources and licenses

Wordfence Intelligence - 1dcf68fd-e9d3-4a46-8bd4-15c2598b91fe - Wordfence Intelligence

Copyright 1999-2026 The MITRE Corporation

Copyright 2012-2026 Defiant Inc.

This record contains material that is subject to copyright

Copyright 1999-2026 The MITRE Corporation

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Copyright 2012-2026 Defiant Inc.

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/
Wordfence Intelligence
Wordfence Intelligence - Defiant, Inc.
Copyright Defiant, Inc. All rights reserved except as granted below.
License grant, section 3.1 of the Wordfence Intelligence Terms and Conditions (January 26, 2026):

Subject to this Agreement, Company hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute the Service. Any copy you make for such purposes is authorized provided that you reproduce Company’s copyright designation, this license, and the license of any disclosed Company licensor in any such copy.

Full applicable Agreement: https://www.wordfence.com/wordfence-intelligence-terms-and-conditions/

Vulnerability history: RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login

All published vulnerabilities of this package (WordPress plugin), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (62) in the archive
Total entries
62
First → latest
10.2017 09.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 9
  • High 15
  • Medium 38

Disclosures per year

Severity:
  1. RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login < 6.0.9.9 - Unauthenticated Stored Cross-Site Scripting
    High · 7.2 CVE-2026-77792 < 6.0.9.9 6.0.9.9
  2. RegistrationMagic <= 6.0.9.8 - Authentication Bypass
    Critical · 9.8 CVE-2026-77826 <= 6.0.9.8 6.0.9.9
  3. RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login <= 6.0.9.8 - Unauthenticated Stored Cross-Site Scripting
    High · 7.2 CVE-2026-82221 <= 6.0.9.8 6.0.9.9
  4. RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login <= 6.0.9.8 - Authentication Bypass
    High · 7.3 CVE-2026-82225 <= 6.0.9.8 6.0.9.9
  5. RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login <= 6.0.9.7 - Unauthenticated PHP Object Injection
    High · 8.1 CVE-2026-73341 <= 6.0.9.7 6.0.9.8
  6. RegistrationMagic <= 6.0.9.1 - Cross-Site Request Forgery to Privilege Escalation via 'rmc_assign_user_role_action' Parameter
    High · 8.8 CVE-2026-12158 <= 6.0.9.1 6.0.9.2
  7. RegistrationMagic <= 6.0.8.6 - Authenticated (Subscriber+) Authentication Bypass via Forged PayPal IPN Request this entry
    Medium · 5.3 CVE-2026-9242 <= 6.0.8.6 6.0.8.7
  8. RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login <= 6.0.7.1 - Authentication Bypass
    Critical · 9.8 CVE-2026-24373 <= 6.0.7.1 6.0.7.2
  9. RegistrationMagic <= 6.0.7.1 - Unauthenticated Privilege Escalation via admin_order
    Critical · 9.8 CVE-2025-15403 <= 6.0.7.1 6.0.7.2
  10. RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login <= 6.0.6.2 - Authenticated (Administrator+) SQL Injection
    High · 7.2 CVE-2025-11204 <= 6.0.6.2 6.0.6.3
  11. RegistrationMagic – User Registration Plugin with Custom Registration Forms <= 6.0.2.6 - Unauthenticated Privilege Escalation via Password Recovery
    Critical · 9.8 CVE-2024-10508 <= 6.0.2.6 6.0.2.7
  12. RegistrationMagic <= 6.0.1.0 - Unauthenticated Stored Cross-Site Scripting
    High · 7.2 CVE-2024-43317 <= 6.0.1.0 6.0.1.1
  13. RegistrationMagic <= 6.0.0.1 - Unauthenticated Stored Cross-Site Scripting
    High · 7.2 CVE-2024-39643 <= 6.0.0.1 6.0.0.2
  14. RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login <= 5.3.1.0 - Authenticated (Contributor+) SQL Injection via Shortcode
    High · 8.8 CVE-2024-1990 <= 5.3.1.0 5.3.2.0
  15. RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login <= 5.3.0.0 - Authenticated (Subscriber+) Privilege Escalation
    High · 8.8 CVE-2024-1991 <= 5.3.0.0 5.3.1.0
  16. RegistrationMagic <= 5.2.1.0 - Authentication Bypass
    Critical · 9.8 CVE-2023-2499 <= 5.2.1.0 5.2.1.1
  17. RegistrationMagic <= 5.0.2.1 - SQL Injection
    High · 7.2 CVE-2022-0420 < 5.0.2.2 5.0.2.2
  18. RegistrationMagic <= 5.0.1.5 - SQL Injection
    High · 8.8 CVE-2021-24862 <= 5.0.1.5 5.0.1.6
  19. RegistrationMagic <= 5.0.1.7 - Authentication Bypass
    Critical · 9.8 CVE-2021-4073 <= 5.0.1.7 5.0.1.8
  20. RegistrationMagic – Custom Registration Forms and User Login <= 4.6.0.3 - Authenticated Settings Import to Privilege Escalation
    Critical · 9.9 CVE-2020-9457 <= 4.6.0.3 4.6.0.4
Show more (5) Showing 20 of 25

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