Authentication Flaw in RegistrationMagic Plugin for WordPress
CVE-2026-77826

8.8HIGH

Key Information:

Vendor

WordPress
Status
Registrationmagic
Vendor
CVE Published:
5 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-77826?

The RegistrationMagic plugin for WordPress fails to properly verify the application associated with a Facebook access token prior to accepting it for user authentication. This significant oversight allows unauthenticated attackers to either gain access to existing user accounts by obtaining valid tokens or to create new accounts without any restrictions, even when user registration is disabled.

Affected Version(s)

RegistrationMagic 5.0.1.8 < 6.0.9.9

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-77826 - Proof of Concept

References

https://wpscan.com/vulnerability/b79a83e8-d7b0-4aa8-b2ba-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Mutantgun
WPScan
.