CVE-2025-53283
📋 TL;DR
This vulnerability allows attackers to upload arbitrary files, including web shells, to WordPress servers running the vulnerable Drop Uploader for CF7 plugin. Attackers can achieve remote code execution and full server compromise. All WordPress sites using affected plugin versions are at risk.
💻 Affected Systems
- Drop Uploader for CF7 - Drag&Drop File Uploader Addon
⚠️ 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 takeover, data exfiltration, ransomware deployment, and use as pivot point for network attacks.
Likely Case
Web shell upload leading to data theft, defacement, or cryptomining malware installation.
If Mitigated
File uploads blocked or sanitized, limiting impact to denial of service or failed upload attempts.
🎯 Exploit Status
Simple HTTP POST request with malicious file upload bypasses validation. Public exploit code available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.4.2 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Drop Uploader for CF7'. 4. Click 'Update Now' if available. 5. If no update appears, manually download version 2.4.2+ from WordPress repository and replace plugin files.
🔧 Temporary Workarounds
Disable plugin immediately
allTemporarily deactivate the vulnerable plugin until patched
wp plugin deactivate drop-uploader-for-contact-form-7-dragdrop-file-uploader-addon
Restrict upload directory permissions
linuxSet upload directory to read-only for web server user
chmod -R 755 /path/to/wp-content/uploads/drop-uploader/
chown -R root:root /path/to/wp-content/uploads/drop-uploader/
🧯 If You Can't Patch
- Disable the plugin completely and use alternative file upload solutions
- Implement WAF rules to block file uploads with dangerous extensions (.php, .phtml, .asp, etc.)
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Drop Uploader for CF7. If version is 2.4.1 or lower, you are vulnerable.Check Version:
wp plugin get drop-uploader-for-contact-form-7-dragdrop-file-uploader-addon --field=versionVerify Fix Applied:
Confirm plugin version is 2.4.2 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- HTTP POST requests to /wp-content/plugins/drop-uploader-for-contact-form-7-dragdrop-file-uploader-addon/ with file uploads
- Files with .php, .phtml, .asp extensions in upload directories
- Unusual process execution from web server user
Network Indicators:
- POST requests with file uploads to plugin endpoints
- Outbound connections from web server to unknown IPs
SIEM Query:
source="web_server_logs" AND (uri="/wp-content/plugins/drop-uploader-for-contact-form-7-dragdrop-file-uploader-addon/*" AND method="POST")