CVE-2025-15510
📋 TL;DR
The NEX-Forms WordPress plugin has an authentication bypass vulnerability that allows unauthenticated attackers to export form configurations containing sensitive data. This affects all WordPress sites using NEX-Forms plugin versions up to 9.1.8. Attackers can access email addresses, API credentials, and integration keys without authentication.
💻 Affected Systems
- NEX-Forms – Ultimate Forms Plugin for WordPress
⚠️ 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 exposure of all form data including PayPal API credentials, third-party integration keys, and sensitive user information leading to financial fraud, account takeovers, and data breaches.
Likely Case
Exfiltration of form configuration data containing email addresses and potentially API credentials, enabling phishing campaigns and credential abuse.
If Mitigated
Limited exposure of non-sensitive form metadata if proper network segmentation and access controls are implemented.
🎯 Exploit Status
Exploitation requires simple HTTP requests with parameter enumeration; no authentication needed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 9.1.9 or later
Vendor Advisory: https://plugins.trac.wordpress.org/browser/nex-forms-express-wp-form-builder
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find NEX-Forms plugin. 4. Click 'Update Now' if update available. 5. If no update appears, manually download version 9.1.9+ from WordPress.org and replace plugin files.
🔧 Temporary Workarounds
Temporary Plugin Deactivation
allDisable the NEX-Forms plugin until patched to prevent exploitation.
wp plugin deactivate nex-forms-express-wp-form-builder
Web Application Firewall Rule
allBlock requests to the vulnerable export endpoint.
# WAF rule to block /wp-admin/admin-ajax.php?action=nf5_export_forms
🧯 If You Can't Patch
- Implement strict network access controls to limit access to WordPress admin interfaces.
- Monitor and alert on suspicious export requests to the vulnerable endpoint.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → NEX-Forms version. If version is 9.1.8 or lower, system is vulnerable.Check Version:
wp plugin get nex-forms-express-wp-form-builder --field=versionVerify Fix Applied:
Confirm plugin version is 9.1.9 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- HTTP requests to /wp-admin/admin-ajax.php with action=nf5_export_forms parameter
- Unusual export activity from unauthenticated IP addresses
Network Indicators:
- Outbound connections to unexpected destinations following form export requests
- Unusual data exfiltration patterns from WordPress server
SIEM Query:
source="web_server" AND uri="/wp-admin/admin-ajax.php" AND query="*action=nf5_export_forms*"