CVE-2026-3754
📋 TL;DR
This SQL injection vulnerability in SourceCodester Sales and Inventory System 1.0 allows attackers to manipulate database queries via the 'cost' parameter in /add_stock.php. Attackers can potentially read, modify, or delete database contents. Organizations using this specific software version are affected.
💻 Affected Systems
- SourceCodester Sales and Inventory System
📦 What is this software?
Sales And Inventory System by Ahsanriaz26gmailcom
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including theft of sensitive data, inventory manipulation, financial fraud, and potential system takeover.
Likely Case
Data exfiltration of sales records, customer information, and inventory data leading to business disruption and compliance violations.
If Mitigated
Limited impact with proper input validation and database permissions restricting unauthorized access.
🎯 Exploit Status
Public proof-of-concept available; remote exploitation with minimal technical skill required.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.sourcecodester.com/
Restart Required: No
Instructions:
1. Check vendor website for updates. 2. If patch available, download and apply. 3. Test functionality after patching.
🔧 Temporary Workarounds
Input Validation Filter
allAdd server-side validation to sanitize 'cost' parameter input
Modify /add_stock.php to validate numeric input: if(!is_numeric($_POST['cost'])) { die('Invalid input'); }
WAF Rule
allImplement web application firewall rules to block SQL injection patterns
Add WAF rule: Detect and block requests containing SQL keywords in 'cost' parameter
🧯 If You Can't Patch
- Isolate the system behind a firewall with strict access controls
- Implement database-level permissions to limit damage from SQL injection
🔍 How to Verify
Check if Vulnerable:
Test /add_stock.php endpoint with SQL injection payloads in 'cost' parameterCheck Version:
Check application version in admin panel or configuration filesVerify Fix Applied:
Verify input validation rejects non-numeric values in 'cost' parameter📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts following SQL injection patterns
Network Indicators:
- HTTP requests to /add_stock.php with SQL keywords in parameters
SIEM Query:
source="web_logs" AND uri="/add_stock.php" AND (param="cost" AND value MATCHES "(?i)(union|select|insert|delete|update|drop|--|#)")