Home/CVE/The RegistrationMagic WordPress plugin made it possible for unauthenticated users to log in as any site user, including
CVE

CVE-2021-4073

The RegistrationMagic WordPress plugin made it possible for unauthenticated users to log in as any site user, including

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.

CRITICAL · CVSS 9.8 EPSS 0.63046
Act now
  • EPSS ≥ 0.50 - high probability of exploitation in the next 30 days
  • EPSS percentile: top 2% of all CVEs by exploitation likelihood
  • Public exploit or PoC is available
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-287Improper Authentication
▤

Affected Products & Versions

1
metagauss registrationmagic<= 5.0.1.7
⚠

Public Exploits & PoCs

2
nucleiRegistrationMagic <= 5.0.1.7 - Authentication Bypasscritical
pocwww.wordfence.com · authentication-bypass-vulnerability-patched-in-user-regis...www.wordfence.com
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · security@wordfence.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD14 Dec 2021 · 04:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
🔗

References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://plugins.trac.wordpress.org/changeset/2635173/custom-registration-form-builder-with-submission-manager/trunk/services/class_rm_user_services.phpPatchThird Party Advisory
https://www.wordfence.com/vulnerability-advisories/#CVE-2021-4073Third Party Advisory
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