CVE-2025-11087
📋 TL;DR
The Zegen Core WordPress plugin up to version 2.0.1 has a CSRF vulnerability that allows unauthenticated attackers to upload arbitrary files to the server by tricking an administrator into clicking a malicious link. This can lead to remote code execution if executable files are uploaded. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- Zegen Core WordPress 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 use the server for malicious activities.
Likely Case
Attackers upload web shells or malicious scripts to gain persistent access, deface websites, or use the server for phishing campaigns.
If Mitigated
Attack fails due to proper CSRF protections, file type validation, or web application firewall blocking malicious uploads.
🎯 Exploit Status
Exploitation requires social engineering to trick an administrator into clicking a link, but the technical complexity is low once the link is clicked.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.0.2 or later
Vendor Advisory: https://themeforest.net/item/zegen-church-wordpress-theme/25116823
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Go to Plugins → Installed Plugins. 3. Find Zegen Core plugin. 4. Click 'Update Now' if update is available. 5. Alternatively, download latest version from vendor and manually update.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the Zegen Core plugin until patched.
wp plugin deactivate zegen-core
Restrict File Uploads
linuxAdd .htaccess rules to block access to upload directories or restrict file types.
Add to .htaccess in uploads directory: <FilesMatch "\.(php|phtml|php3|php4|php5|php7|phps|php8|inc|exe|sh|bat|cmd|pl|cgi)">\n Order Allow,Deny\n Deny from all\n</FilesMatch>
🧯 If You Can't Patch
- Remove the Zegen Core plugin completely from the WordPress installation.
- Implement a web application firewall (WAF) with CSRF protection and file upload filtering rules.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for Zegen Core version. If version is 2.0.1 or lower, you are vulnerable.Check Version:
wp plugin get zegen-core --field=versionVerify Fix Applied:
After update, verify Zegen Core plugin version is 2.0.2 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual file uploads to /wp-content/uploads/custom-font-code/ directory
- POST requests to /wp-content/plugins/zegen-core/custom-font-code/custom-fonts-uploads.php without referrer headers
Network Indicators:
- HTTP POST requests to the vulnerable endpoint with file upload parameters
- Traffic patterns showing CSRF attacks (requests from external sites to your WordPress)
SIEM Query:
source="web_logs" AND uri="/wp-content/plugins/zegen-core/custom-font-code/custom-fonts-uploads.php" AND method="POST" AND (user_agent="*" OR referrer="*")