Critical · published June 26, 2025
🚨 Unauthenticated attackers can register as administrators! The Simple User Registration plugin for WordPress is leaking like a sieve, allowing anyone to don the admin cape! 🔥 Think of it like a hotel that forgot to check IDs during check-in — anyone can walk in and claim to be the manager, no questions asked. This vulnerability allows unauthorized users to elevate their privileges as easily as checking into a VIP suite without any credentials! An unauthorized user could stroll right into your WordPress site with admin privileges. This means they can change settings, delete content, or even install malicious plugins — it’s an absolute nightmare waiting to happen! If you’re running this plugin, you’re leaving the front door wide open for a hostile takeover.
Think of it like a hotel that forgot to check IDs during check-in — anyone can walk in and claim to be the manager, no questions asked. This vulnerability allows unauthorized users to elevate their privileges as easily as checking into a VIP suite without any credentials! This privilege escalation issue is caused by insufficient restrictions on user meta values during registration, making it possible for anyone to become an admin without the proper authentication check.
An unauthorized user could stroll right into your WordPress site with admin privileges. This means they can change settings, delete content, or even install malicious plugins — it’s an absolute nightmare waiting to happen! If you’re running this plugin, you’re leaving the front door wide open for a hostile takeover. Immediately update the Simple User Registration plugin to version 6.4 or later to patch this vulnerability. Additionally, review the user registration process and implement strict validation checks on user meta values to prevent unauthorized privilege escalation. Don't delay! You’ve got this! With a quick update, you can lock down your site and keep those pesky attackers at bay! 🛡️
| Product | Versions | Fixed in |
|---|---|---|
| najeebmedia/memberhero | ≤ 6.3 | — |