CVE-2021-4073

Public Exploit
RegistrationMagic <= 5.0.1.7 Authentication Bypass

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.

Remediation

Solution:

  • Update to version 5.0.1.8, or newer.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 2.50% Top 20%
Third-Party Advisory wordpress.org Third-Party Advisory wordfence.com Third-Party Advisory wordfence.com
Affected: RegistrationMagic RegistrationMagic
Published at:
Updated at:

References

Link Tags
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-4073 third party advisory
https://plugins.trac.wordpress.org/changeset/2635173/custom-registration-form-builder-with-submission-manager/trunk/services/class_rm_user_services.php third party advisory patch
https://www.wordfence.com/blog/2021/12/authentication-bypass-vulnerability-patched-in-user-registration-plugin/ third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2021-4073?
CVE-2021-4073 has been scored as a critical severity vulnerability.
How to fix CVE-2021-4073?
To fix CVE-2021-4073: Update to version 5.0.1.8, or newer.
Is CVE-2021-4073 being actively exploited in the wild?
It is possible that CVE-2021-4073 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-4073?
CVE-2021-4073 affects RegistrationMagic RegistrationMagic.
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