CVE-2021-4073
CRITICAL EXPLOITED NUCLEIRegistrationMagic <5.0.1.7 - Auth Bypass
Title source: llmExploitation Summary
CVE-2021-4073 has been observed exploited in the wild (reported by VulnCheck KEV). A Nuclei detection template is also available.
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)
Core 3
Core References
Third Party Advisory x_refsource_misc
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-4073
Patch, Third Party Advisory x_refsource_misc
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 x_refsource_misc
https://www.wordfence.com/blog/2021/12/authentication-bypass-vulnerability-patched-in-user-registration-plugin/
Scores
CVSS v3
9.8
EPSS
0.0700
EPSS Percentile
93.3%
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