CVE-2025-39402
📋 TL;DR
This vulnerability allows attackers to upload arbitrary files, including web shells, to WordPress servers running the vulnerable WPAMS plugin. Attackers can gain full control of affected websites. All WordPress sites using WPAMS plugin versions up to 44.0 (17-08-2023) are affected.
💻 Affected Systems
- WordPress WPAMS (Apartment Management System) 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, and use as attack platform
Likely Case
Website defacement, data exfiltration, and backdoor installation for persistent access
If Mitigated
Limited impact if file uploads are restricted via web application firewall or server configuration
🎯 Exploit Status
Simple file upload exploitation with publicly available proof-of-concept
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 44.0 (17-08-2023)
Restart Required: No
Instructions:
1. Log into WordPress admin panel
2. Navigate to Plugins → Installed Plugins
3. Find WPAMS plugin
4. Click 'Update Now' if update available
5. If no update, deactivate and remove plugin immediately
🔧 Temporary Workarounds
Web Application Firewall Rule
allBlock file uploads to vulnerable endpoints
WAF rule: Block POST requests containing file uploads to /wp-content/plugins/wpams/
Server File Permission Restriction
linuxRemove write permissions from wp-content/uploads directory
chmod -R 755 /path/to/wp-content/uploads/
chown -R www-data:www-data /path/to/wp-content/uploads/
🧯 If You Can't Patch
- Immediately deactivate and remove the WPAMS plugin from all WordPress installations
- Implement strict file upload validation and monitoring for all WordPress file upload functionality
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for WPAMS version ≤44.0Check Version:
wp plugin list --name=wpams --field=version (if WP-CLI installed)Verify Fix Applied:
Confirm WPAMS plugin is either removed or updated to version >44.0📡 Detection & Monitoring
Log Indicators:
- POST requests to /wp-content/plugins/wpams/ with file uploads
- Unusual file creations in wp-content/uploads/
Network Indicators:
- HTTP POST requests with file uploads to WPAMS endpoints
- Outbound connections from web server to unknown IPs
SIEM Query:
source="web_server" AND (uri_path="/wp-content/plugins/wpams/" AND method="POST" AND content_type="multipart/form-data")