CVE-2025-12637
📋 TL;DR
The Elastic Theme Editor WordPress plugin allows authenticated attackers with Subscriber-level access or higher to upload arbitrary files through a dynamic code generation vulnerability. This can lead to remote code execution on affected WordPress sites. All sites using this plugin up to version 0.0.3 are vulnerable.
💻 Affected Systems
- WordPress Elastic Theme Editor 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 via remote code execution, allowing attackers to install backdoors, steal data, deface websites, or pivot to internal networks.
Likely Case
Website defacement, malware injection, credential theft, or data exfiltration through uploaded web shells.
If Mitigated
Limited impact if file uploads are restricted at web server level or if plugin is disabled, though vulnerability remains present.
🎯 Exploit Status
Exploitation requires authenticated access but only at Subscriber level (lowest privilege). Public exploit details are available in security advisories.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.0.4 or later
Vendor Advisory: https://plugins.trac.wordpress.org/browser/elastic-theme-editor/trunk/editor/class-elastic-editor.php
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Elastic Theme Editor. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and delete plugin immediately.
🔧 Temporary Workarounds
Disable plugin
allDeactivate Elastic Theme Editor plugin to prevent exploitation
wp plugin deactivate elastic-theme-editor
Restrict file uploads
linuxConfigure web server to block PHP file uploads to plugin directories
# Add to .htaccess for Apache:
<FilesMatch "\.(php|php3|php4|php5|phtml|pl|py|jsp|asp|htm|html|shtml|sh|cgi)$">
Order Allow,Deny
Deny from all
</FilesMatch>
# Add to nginx config:
location ~* \.(php|php3|php4|php5|phtml|pl|py|jsp|asp)$ {
deny all;
}
🧯 If You Can't Patch
- Immediately deactivate and remove the Elastic Theme Editor plugin from all WordPress installations
- Implement strict file upload restrictions at web server level and monitor for suspicious upload attempts
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins for Elastic Theme Editor version 0.0.3 or earlierCheck Version:
wp plugin get elastic-theme-editor --field=versionVerify Fix Applied:
Verify plugin version is 0.0.4 or later, or confirm plugin is not installed/activated📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to /wp-content/plugins/elastic-theme-editor/ directories
- POST requests to theme editor endpoints from Subscriber-level users
- Execution of unexpected PHP files in plugin directories
Network Indicators:
- HTTP POST requests to /wp-admin/admin-ajax.php with action=process_theme
- Uploads of PHP files to plugin directories
SIEM Query:
source="web_access.log" AND (uri_path="/wp-admin/admin-ajax.php" AND post_data CONTAINS "process_theme") OR (uri_path CONTAINS "/wp-content/plugins/elastic-theme-editor/" AND method="POST")