CVE-2023-51509
📋 TL;DR
This vulnerability allows attackers to inject malicious scripts into web pages generated by the RegistrationMagic WordPress plugin. When users visit a specially crafted URL, the script executes in their browser, potentially stealing credentials or performing actions on their behalf. All WordPress sites using RegistrationMagic versions up to 5.2.4.1 are affected.
💻 Affected Systems
- RegistrationMagic – Custom Registration Forms, User Registration, Payment, and User Login
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers steal administrator session cookies, gain full control of the WordPress site, install backdoors, or redirect users to malicious sites.
Likely Case
Attackers steal user session cookies, perform actions as authenticated users, or deface parts of the website.
If Mitigated
With proper input validation and output encoding, malicious scripts are neutralized before reaching users' browsers.
🎯 Exploit Status
Reflected XSS vulnerabilities are commonly exploited and require minimal technical skill.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.2.4.2 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find RegistrationMagic plugin. 4. Click 'Update Now' if available. 5. Alternatively, download latest version from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily disable the RegistrationMagic plugin until patched.
wp plugin deactivate custom-registration-form-builder-with-submission-manager
Implement WAF rules
allConfigure web application firewall to block XSS payloads targeting RegistrationMagic endpoints.
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Use browser security extensions that block reflected XSS attacks
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > RegistrationMagic version. If version is 5.2.4.1 or earlier, you are vulnerable.Check Version:
wp plugin get custom-registration-form-builder-with-submission-manager --field=versionVerify Fix Applied:
Verify plugin version is 5.2.4.2 or later in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual GET/POST requests containing script tags or JavaScript payloads to RegistrationMagic endpoints
- Multiple failed login attempts following suspicious URL visits
Network Indicators:
- HTTP requests with suspicious parameters containing <script>, javascript:, or encoded payloads
SIEM Query:
source="web_server" AND (uri="*registrationmagic*" OR uri="*rm_form*" OR uri="*rm_front*" AND (param="*<script>*" OR param="*javascript:*" OR param="*%3Cscript%3E*"))🔗 References
- https://patchstack.com/database/vulnerability/custom-registration-form-builder-with-submission-manager/wordpress-registrationmagic-plugin-5-2-4-1-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
- https://patchstack.com/database/vulnerability/custom-registration-form-builder-with-submission-manager/wordpress-registrationmagic-plugin-5-2-4-1-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
