User Registration Bypass in Clean Login Plugin for WordPress
CVE-2026-90976

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Clean Login
Vendor
CVE Published:
18 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-90976?

The Clean Login WordPress plugin version prior to 1.19 contains a vulnerability that fails to verify if user registration is enabled before allowing account creation. This flaw permits unauthenticated individuals to create accounts on websites where account registration functionalities should be disabled. Consequently, it poses a significant security risk, enabling potential unauthorized access to sensitive site functionalities.

Affected Version(s)

Clean Login 0 < 1.19

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-2026-90976 - Proof of Concept

References

https://wpscan.com/vulnerability/e72f9529-6500-4ed2-a8cc-...
exploitvdb-entrytechnical-description

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Artus KG
WPScan
.