CVE-2025-49330
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code via PHP object injection through deserialization of untrusted data in the CRM Perks Integration for Contact Form 7 and Zoho CRM, Bigin WordPress plugin. All WordPress sites using affected versions of this plugin are vulnerable to complete system compromise.
💻 Affected Systems
- CRM Perks Integration for Contact Form 7 and Zoho CRM, Bigin 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
Full remote code execution leading to complete server takeover, data exfiltration, and lateral movement within the network.
Likely Case
Remote code execution allowing attackers to install backdoors, create admin users, steal sensitive data, or deploy ransomware.
If Mitigated
Limited impact if proper web application firewalls and input validation are in place, though exploitation may still succeed.
🎯 Exploit Status
Exploitation is straightforward with publicly available proof-of-concept code targeting WordPress deserialization vulnerabilities.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.3.1 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Integration for Contact Form 7 and Zoho CRM, Bigin'. 4. Click 'Update Now' if update available. 5. If no update appears, manually download version 1.3.1+ from WordPress.org and replace plugin files.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate cf7-zoho
Web Application Firewall Rule
allBlock requests containing serialized PHP objects
Add WAF rule to block patterns like O:8:"stdClass" or similar serialized data
🧯 If You Can't Patch
- Remove the plugin completely from all WordPress installations
- Implement strict input validation and sanitization for all plugin-related form submissions
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for 'Integration for Contact Form 7 and Zoho CRM, Bigin' version 1.3.0 or earlierCheck Version:
wp plugin get cf7-zoho --field=versionVerify Fix Applied:
Verify plugin version is 1.3.1 or later in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- POST requests to WordPress admin-ajax.php with serialized PHP objects in parameters
- Unusual PHP process execution from web user context
- New admin user creation in WordPress logs
Network Indicators:
- HTTP requests containing serialized data patterns (O:8:\"stdClass\")
- Outbound connections to suspicious IPs after plugin access
SIEM Query:
source="wordpress.log" AND "admin-ajax.php" AND ("O:8:\"stdClass\"" OR "serialize" OR "unserialize")