CVE-2021-4073

CRITICAL EXPLOITED NUCLEI

RegistrationMagic <5.0.1.7 - Auth Bypass

Title source: llm

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.

Nuclei Templates (1)

RegistrationMagic <= 5.0.1.7 - Authentication Bypass

CRITICALVERIFIEDby daffainfo

References (3)

[Third Party Advisory] https://www.wordfence.com/vulnerability-advisories/#CVE-2021-4073

[Patch, Third Party Advisory] https://plugins.trac.wordpress.org/changeset/2635173/custom-registration-form-builder-with-submission-manager/trunk/services/class_rm_user_services.php

[Exploit, Third Party Advisory] https://www.wordfence.com/blog/2021/12/authentication-bypass-vulnerability-patched-in-user-registration-plugin/

Scores

CVSS v3 9.8

EPSS 0.6888

EPSS Percentile 98.6%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact total

Details

VulnCheck KEV 2021-12-08

CWE

CWE-287

Status published

Products (1)

metagauss/registrationmagic < 5.0.1.7

Published Dec 14, 2021

Tracked Since Feb 18, 2026