CVE-2025-56382
📋 TL;DR
An authenticated attacker can inject malicious scripts into the Customer Name field in LionCoders SalePro POS 5.4.8. When other users view customer profiles, these scripts execute in their browsers, potentially stealing session cookies or performing unauthorized actions. This affects all installations of SalePro POS 5.4.8 with the Customer Management Module enabled.
💻 Affected Systems
- LionCoders SalePro POS
📦 What is this software?
Salepro Pos by Lion Coders
⚠️ Risk & Real-World Impact
Worst Case
Attacker steals administrator session cookies, gains full system control, exfiltrates sensitive customer data, and deploys ransomware or backdoors.
Likely Case
Attacker steals user session cookies to impersonate legitimate users, accesses customer financial data, and modifies transaction records.
If Mitigated
Script execution is contained within the customer management interface with limited impact on other system components.
🎯 Exploit Status
Exploit requires authenticated access but injection is straightforward via web interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Monitor vendor channels for updates.
🔧 Temporary Workarounds
Input Sanitization Filter
allImplement server-side input validation to strip or encode HTML/JavaScript from Customer Name field
Implement input sanitization in customer profile processing code
Output Encoding
allApply proper output encoding when displaying customer names to prevent script execution
Encode customer name output using HTML entity encoding
🧯 If You Can't Patch
- Restrict customer management access to trusted administrators only
- Implement web application firewall (WAF) rules to block XSS payloads in customer name fields
🔍 How to Verify
Check if Vulnerable:
Test by entering <script>alert('XSS')</script> in Customer Name field and check if alert executes when viewing customer detailsCheck Version:
Check SalePro POS version in admin panel or configuration filesVerify Fix Applied:
Test with same payload and verify script does not execute; check that input is properly sanitized📡 Detection & Monitoring
Log Indicators:
- Unusual customer name entries containing script tags or JavaScript code
- Multiple failed login attempts followed by customer profile modifications
Network Indicators:
- HTTP POST requests to customer management endpoints with suspicious payloads
- Outbound connections to unknown domains from POS system
SIEM Query:
source="sale_pro_logs" AND (customer_name CONTAINS "<script>" OR customer_name CONTAINS "javascript:")