CVE-2025-1681
📋 TL;DR
The Cardealer WordPress theme has a vulnerability that allows authenticated users with subscriber-level access or higher to modify or delete arbitrary CSS and JavaScript files. This occurs due to missing capability checks and filename sanitization in demo theme scheme AJAX functions. WordPress sites using Cardealer theme versions up to 1.6.4 are affected.
💻 Affected Systems
- Cardealer 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
Attackers could delete critical theme files, inject malicious code into CSS/JS files to create persistent backdoors, or deface the website by modifying styling and functionality.
Likely Case
Malicious users with subscriber accounts could disrupt website appearance by modifying CSS files or inject tracking scripts by editing JavaScript files.
If Mitigated
With proper access controls and file integrity monitoring, impact is limited to temporary service disruption until files are restored from backups.
🎯 Exploit Status
Exploitation requires authenticated access but is technically simple once authenticated. The vulnerability is in publicly accessible AJAX endpoints.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.6.5 or later
Vendor Advisory: https://webtemplatemasters.com/cardealer/changelog/#v165
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Appearance > Themes. 3. Check for Cardealer theme updates. 4. Update to version 1.6.5 or later. 5. Clear any caching plugins/CDN caches.
🔧 Temporary Workarounds
Restrict User Registration
allDisable new user registration to prevent attackers from creating subscriber accounts.
Remove Vulnerable AJAX Endpoints
linuxBlock access to the vulnerable demo theme scheme AJAX functions via .htaccess or web server configuration.
# Add to .htaccess:
RewriteCond %{REQUEST_URI} ^/wp-admin/admin-ajax\.php$
RewriteCond %{QUERY_STRING} action=cardealer_demo_theme_scheme
RewriteRule ^ - [F]
🧯 If You Can't Patch
- Implement strict file integrity monitoring for theme CSS and JS files
- Review and remove any suspicious subscriber-level user accounts
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Appearance > Themes for Cardealer theme version. If version is 1.6.4 or lower, you are vulnerable.Check Version:
Check WordPress admin panel or examine theme's style.css file header for Version: entryVerify Fix Applied:
After updating, verify Cardealer theme version shows 1.6.5 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /wp-admin/admin-ajax.php with action=cardealer_demo_theme_scheme
- Multiple file modification attempts on .css or .js files from non-admin users
Network Indicators:
- POST requests to admin-ajax.php with demo theme scheme parameters from unexpected IPs
SIEM Query:
source="wordpress.log" AND (uri="/wp-admin/admin-ajax.php" AND parameters CONTAINS "cardealer_demo_theme_scheme")