Authentication Bypass in MainWP Child WordPress Plugin
CVE-2026-12255

Currently unrated

Key Information:

Vendor

WordPress
Status
MainWP Child
Vendor
CVE Published:
27 July 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-12255?

The MainWP Child plugin for WordPress prior to version 6.1.2 contains a significant flaw that fails to verify the identity of the requester during site-registration requests. When password authentication is disabled for the targeted account, this vulnerability enables an unauthenticated attacker to register and thereby gain a valid authentication session as the account holder, which could include administrative accounts. Successful exploitation allows unauthorized access to sensitive functionalities within the WordPress environment.

Affected Version(s)

MainWP Child 0 < 6.1.2

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-2026-12255 - Proof of Concept

References

https://wpscan.com/vulnerability/6ecd37bf-f48a-4f7f-8a93-...
exploitvdb-entrytechnical-description

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Khaled Alenazi (Nxploited)
WPScan
.