Read the docs
TI-2021-02957 Aliases CVE-2021-4073GHSA-3858-cvv4-qvj7

RegistrationMagic <= 5.0.1.7 Authentication Bypass

Priority MEDIUM 59CWE-287Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0684 94th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MetagaussRegistrationMagic5.0.1.7 – 5.0.1.7—No fix listedCNA
  • RegistrationMagic VendorMetagauss Affected 5.0.1.7 – 5.0.1.7 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:metagauss:registrationmagic:*:*:*:*:*:wordpress:*:*up to 5.0.1.7VulnerableMetagauss
  • cpe:2.3:a:metagauss:registrationmagic:*:*:*:*:*:wordpress:*:* Versions up to 5.0.1.7 Vulnerable ·Metagauss

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-4073
  2. 2026-10-03 Alias added: GHSA-3858-cvv4-qvj7

References

Exploit 1

Patch 1

Advisory 1

  • TI-2021-07144 RegistrationMagic < 5.0.1.6 - Admin+ SQL Injection CVSS 3.1HIGH 7.2
  • TI-2024-08712 RegistrationMagic < 6.0.2.1 - Stored XSS CVSS 3.1MEDIUM 4.8
  • TI-2024-09734 RegistrationMagic – User Registration Plugin with Custom Registration Forms <= 6.0.2.6… CVSS 3.1CRITICAL 9.8
  • TI-2023-02346 RegistrationMagic <= 5.2.1.0 - Authentication Bypass CVSS 3.1CRITICAL 9.8
  • TI-2020-07568 In the RegistrationMagic plugin through 4.6.0.3 for WordPress, the export function allows… CVSS 3.1HIGH 8.8
  • TI-2020-07567 The RegistrationMagic plugin through 4.6.0.3 for WordPress allows remote authenticated… CVSS 3.1HIGH 8.8
See all 33 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences