CVE-2025-50850
📋 TL;DR
This vulnerability in CS Cart 4.18.3 allows attackers to perform brute-force attacks against vendor login pages due to missing CAPTCHA and rate limiting. Attackers can systematically guess credentials to gain unauthorized access to vendor accounts. All CS Cart installations using the vulnerable version are affected.
💻 Affected Systems
- CS Cart
📦 What is this software?
Cs Cart by Cs Cart
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of all vendor accounts leading to data theft, financial fraud, and unauthorized administrative actions within the e-commerce platform.
Likely Case
Unauthorized access to some vendor accounts resulting in data exposure, fraudulent transactions, and potential lateral movement within the system.
If Mitigated
Failed login attempts are logged and blocked after threshold, preventing account takeover while maintaining legitimate access.
🎯 Exploit Status
Simple brute-force tools can exploit this vulnerability without special knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: http://cs.com
Restart Required: No
Instructions:
Check vendor website for security updates. If patch available, apply according to vendor instructions.
🔧 Temporary Workarounds
Implement Web Application Firewall (WAF)
allConfigure WAF rules to block excessive login attempts and implement CAPTCHA at the network layer.
Add Rate Limiting via .htaccess
linuxImplement IP-based rate limiting for login endpoints using Apache mod_evasive or similar.
# Add to .htaccess
<IfModule mod_evasive20.c>
DOSHashTableSize 3097
DOSPageCount 5
DOSSiteCount 100
DOSPageInterval 2
DOSSiteInterval 2
DOSBlockingPeriod 600
</IfModule>
🧯 If You Can't Patch
- Implement network-level rate limiting using firewall rules or load balancer
- Enable multi-factor authentication for all vendor accounts
🔍 How to Verify
Check if Vulnerable:
Test vendor login page for absence of CAPTCHA and ability to submit multiple rapid login attempts without blocking.Check Version:
Check CS Cart admin panel or config files for version informationVerify Fix Applied:
Verify CAPTCHA appears on vendor login and rapid failed attempts trigger temporary IP blocking.📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts from same IP
- Unusual vendor login patterns outside business hours
- Successful vendor logins from new IPs/locations
Network Indicators:
- High volume of POST requests to /vendor/login endpoint
- Traffic patterns showing credential stuffing tools
SIEM Query:
source="web_logs" | search "POST /vendor/login" | stats count by src_ip | where count > 10