CVE-2025-26872
📋 TL;DR
This vulnerability allows attackers to upload malicious files to WordPress sites using the Eximius theme, potentially leading to complete system compromise. It affects all WordPress installations using Eximius theme versions up to 2.2. Attackers can exploit this without authentication to upload dangerous file types.
💻 Affected Systems
- WordPress Eximius 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
Remote code execution leading to complete server takeover, data theft, and lateral movement within the network.
Likely Case
Webshell deployment allowing persistent backdoor access, defacement, or malware distribution.
If Mitigated
Limited impact if file uploads are restricted to authenticated users and file types are validated.
🎯 Exploit Status
Simple file upload exploitation with public proof-of-concept available. No authentication required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 2.2 (check theme repository for latest)
Vendor Advisory: https://patchstack.com/database/wordpress/theme/eximius/vulnerability/wordpress-eximius-theme-2-2-arbitrary-file-upload-vulnerability?_s_id=cve
Restart Required: No
Instructions:
1. Update Eximius theme to latest version via WordPress admin panel. 2. Verify theme version is above 2.2. 3. Clear WordPress cache if applicable.
🔧 Temporary Workarounds
Disable Eximius Theme
allSwitch to a different WordPress theme until patch can be applied
wp theme activate twentytwentyfour --allow-root
Restrict File Uploads via .htaccess
linuxBlock execution of uploaded files in uploads directory
<FilesMatch "\.(php|php5|phtml|pl|py|jsp|asp|sh|cgi)$">
Order Deny,Allow
Deny from all
</FilesMatch>
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block malicious file uploads
- Restrict upload directory permissions and disable script execution in upload folders
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Appearance > Themes for Eximius theme version 2.2 or lowerCheck Version:
wp theme list --field=name,version --allow-root | grep eximiusVerify Fix Applied:
Verify Eximius theme version is above 2.2 in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to WordPress uploads directory
- POST requests to theme-specific upload endpoints
- Execution of PHP files from uploads directory
Network Indicators:
- HTTP POST requests with file uploads to theme-specific paths
- Unusual outbound connections from web server
SIEM Query:
source="web_logs" AND (uri_path="/wp-content/themes/eximius/" AND method="POST") AND (file_upload="true" OR content_type="multipart/form-data")