CVE-2025-63056
📋 TL;DR
This vulnerability allows attackers to bypass authorization controls in the BestWebSoft Contact Form WordPress plugin, potentially accessing administrative functions without proper authentication. It affects all WordPress sites running Contact Form by BestWebSoft version 4.3.5 and earlier.
💻 Affected Systems
- Contact Form by BestWebSoft 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 form settings, access form submissions containing sensitive user data, or potentially escalate privileges within WordPress.
Likely Case
Unauthorized users could view form submissions containing personal information, modify form configurations, or disrupt form functionality.
If Mitigated
With proper network segmentation and web application firewalls, impact would be limited to unauthorized access to form management functions.
🎯 Exploit Status
Exploitation requires some WordPress access but not administrative privileges. Attackers need to identify vulnerable endpoints.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 4.3.6 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Contact Form by BestWebSoft'. 4. Click 'Update Now' if available. 5. Alternatively, download latest version from WordPress repository and replace plugin files.
🔧 Temporary Workarounds
Temporary Plugin Deactivation
allDisable the vulnerable plugin until patching is possible
wp plugin deactivate contact-form-plugin
Web Application Firewall Rule
allBlock access to vulnerable plugin endpoints
Add WAF rule to block requests to /wp-content/plugins/contact-form-plugin/ with suspicious parameters
🧯 If You Can't Patch
- Implement strict network segmentation to isolate WordPress installation
- Enable detailed logging and monitoring for unauthorized access attempts to plugin endpoints
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins → Contact Form by BestWebSoft → Version numberCheck Version:
wp plugin get contact-form-plugin --field=versionVerify Fix Applied:
Verify plugin version is 4.3.6 or higher in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unauthorized POST requests to /wp-admin/admin-ajax.php with contact-form-plugin actions
- Access to contact form submission data from unauthenticated users
Network Indicators:
- Unusual traffic patterns to contact form plugin endpoints
- Requests bypassing normal authentication flows
SIEM Query:
source="wordpress.log" AND (uri_path="/wp-admin/admin-ajax.php" AND parameters CONTAINS "contact-form-plugin") AND user="-"