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CVE-2021-4073

HIGH 8.1 CVSS 3.1
Published
December 14, 2021
Last modified
June 17, 2026
NVD status
Modified
Reported by
security@wordfence.com
Weakness
CWE-287
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

The RegistrationMagic WordPress plugin made it possible for unauthenticated users to log in as any site user, including administrators, if they knew a valid username on the site due to missing identity validation in the social login function social_login_using_email() of the plugin. This affects versions equal to, and less than, 5.0.1.7.

Affected WordPress components

  • RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login Plugin · custom-registration-form-builder-with-submission-manager
    Confirmed match Active
    From 5.0.1.7 (including) to 5.0.1.7 (including)
    View on WordPress.org

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • RegistrationMagic RegistrationMagic — From 5.0.1.7 (including) to 5.0.1.7 (including)
  • metagauss registrationmagic — Up to and including 5.0.1.7

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset/2635173/custom-registration-form-builder-with-submission-manager/trunk/services/class_rm_user_services.php Patch, Third Party Advisory
  • www.wordfence.com https://www.wordfence.com/blog/2021/12/authentication-bypass-vulnerability-patched-in-user-registration-plugin/ Exploit, Third Party Advisory
  • www.wordfence.com https://www.wordfence.com/vulnerability-advisories/#CVE-2021-4073 Third Party Advisory
  • nvd.nist.gov Official NVD record