CVE-2024-50484
📋 TL;DR
This vulnerability allows attackers to upload arbitrary files, including web shells, to WordPress servers running the Multi Purpose Mail Form plugin. Attackers can gain complete control of affected websites. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- WordPress Multi Purpose Mail Form plugin
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete server compromise leading to data theft, ransomware deployment, or use as part of a botnet.
Likely Case
Website defacement, data exfiltration, or installation of backdoors for persistent access.
If Mitigated
Limited impact if file uploads are disabled or strict file type validation is implemented.
🎯 Exploit Status
Exploitation requires no authentication and is trivial with publicly available tools.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.0.3 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins. 3. Find Multi Purpose Mail Form. 4. Click 'Update Now' if available. 5. If no update appears, manually download version 1.0.3+ from WordPress.org and replace plugin files.
🔧 Temporary Workarounds
Disable plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate multi-purpose-mail-form
Restrict file uploads
allBlock PHP and executable file uploads via web server configuration
# In .htaccess for Apache:
<FilesMatch "\.(php|phtml|phar|exe|sh)$">
Order Allow,Deny
Deny from all
</FilesMatch>
# In nginx config:
location ~ \.(php|phtml|phar|exe|sh)$ {
deny all;
}
🧯 If You Can't Patch
- Immediately disable the Multi Purpose Mail Form plugin
- Implement web application firewall rules to block file upload requests to the plugin's endpoints
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Multi Purpose Mail Form. If version is 1.0.2 or earlier, you are vulnerable.Check Version:
wp plugin get multi-purpose-mail-form --field=versionVerify Fix Applied:
Verify plugin version is 1.0.3 or later in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- POST requests to /wp-content/plugins/multi-purpose-mail-form/ upload endpoints
- Unusual file creations in upload directories (e.g., .php files with suspicious names)
- Web shell access patterns in access logs
Network Indicators:
- Unexpected outbound connections from web server
- File uploads to plugin-specific endpoints
SIEM Query:
source="web_logs" AND (uri="/wp-content/plugins/multi-purpose-mail-form/*" AND method="POST")