CVE-2025-39591
📋 TL;DR
This CVE describes a missing authorization vulnerability in WP Shuffle WP Subscription Forms WordPress plugin that allows attackers to bypass access controls. Attackers could potentially modify subscription forms or access administrative functions without proper authentication. This affects all WordPress sites running WP Subscription Forms version 1.2.3 and earlier.
💻 Affected Systems
- WP Shuffle WP Subscription Forms 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
Attackers could modify subscription forms to collect sensitive user data, inject malicious content, or gain administrative access to the WordPress site.
Likely Case
Attackers modify subscription forms to collect unauthorized user data or inject spam/malicious content into forms.
If Mitigated
With proper network segmentation and web application firewalls, impact is limited to the specific WordPress instance.
🎯 Exploit Status
Missing authorization vulnerabilities are typically easy to exploit once discovered.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.2.4 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find WP Subscription Forms. 4. Click 'Update Now' if available. 5. If no update available, deactivate and delete plugin, then install fresh version 1.2.4+ from WordPress repository.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily deactivate WP Subscription Forms plugin until patched version can be installed.
wp plugin deactivate wp-subscription-forms
Web Application Firewall rule
allBlock unauthorized access to plugin admin endpoints.
# Configure WAF to block requests to /wp-content/plugins/wp-subscription-forms/admin/* from non-admin users
🧯 If You Can't Patch
- Implement strict network segmentation to isolate WordPress instance
- Deploy web application firewall with rules blocking unauthorized admin access
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for WP Subscription Forms version 1.2.3 or earlier.Check Version:
wp plugin get wp-subscription-forms --field=versionVerify Fix Applied:
Verify plugin version is 1.2.4 or later in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unauthorized POST requests to /wp-content/plugins/wp-subscription-forms/admin/* endpoints
- Multiple failed authentication attempts followed by successful admin actions
Network Indicators:
- Unusual traffic patterns to plugin admin endpoints from external IPs
SIEM Query:
source="wordpress.log" AND (uri_path="/wp-content/plugins/wp-subscription-forms/admin/*" AND http_method="POST") AND user_role!="administrator"