CVE-2025-53251
📋 TL;DR
This vulnerability allows unauthenticated attackers to upload arbitrary files, including web shells, to WordPress servers running the vulnerable Pin WP theme. Attackers can achieve remote code execution and full server compromise. All WordPress sites using Pin WP theme versions before 7.2 are affected.
💻 Affected Systems
- An-Themes Pin WP WordPress Theme
⚠️ 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 with persistent backdoor installation, data exfiltration, ransomware deployment, and lateral movement to other systems.
Likely Case
Web shell upload leading to website defacement, credential theft, and installation of cryptocurrency miners or malware.
If Mitigated
File upload attempts blocked at WAF level, with alerts generated for investigation.
🎯 Exploit Status
Exploitation requires only HTTP POST requests with malicious file uploads; automated tools exist.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.2
Vendor Advisory: https://patchstack.com/database/wordpress/theme/pin-wp/vulnerability/wordpress-responsive-menu-plugin-6-1-4-arbitrary-file-upload-vulnerability?_s_id=cve
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Appearance > Themes. 3. Update Pin WP theme to version 7.2 or later. 4. Verify update completed successfully.
🔧 Temporary Workarounds
WAF File Upload Blocking
allConfigure web application firewall to block PHP, ASP, JSP, and other executable file uploads to WordPress upload directories.
Disable Theme
linuxTemporarily switch to default WordPress theme until patch can be applied.
wp theme activate twentytwentyfour
🧯 If You Can't Patch
- Implement strict file upload validation at application layer
- Restrict write permissions to WordPress upload directories
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Appearance > Themes for Pin WP theme version. If version is below 7.2, system is vulnerable.Check Version:
wp theme list --field=name,version | grep 'pin-wp'Verify Fix Applied:
Confirm Pin WP theme version is 7.2 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- HTTP POST requests to /wp-content/themes/pin-wp/ upload endpoints
- File uploads with .php, .asp, .jsp extensions to upload directories
- Unusual file creation timestamps in wp-content/uploads/
Network Indicators:
- POST requests with file uploads to theme-specific endpoints
- HTTP traffic patterns showing file uploads followed by immediate GET requests to same files
SIEM Query:
source="web_server" (method="POST" AND uri_path="/wp-content/themes/pin-wp/" AND file_extension IN ("php", "asp", "jsp"))