CVE-2026-3790
📋 TL;DR
This SQL injection vulnerability in SourceCodester Sales and Inventory System 1.0 allows remote attackers to execute arbitrary SQL commands via the stock_name1 parameter in check_supplier_details.php. Organizations using this specific version of the inventory system are affected, potentially exposing database contents including sensitive business data.
💻 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 leading to data theft, data manipulation, or system takeover via SQL injection to execute arbitrary commands.
Likely Case
Unauthorized access to sensitive inventory and supplier data, potential data exfiltration, and database integrity compromise.
If Mitigated
Limited impact with proper input validation and database permissions, potentially only error messages or limited data exposure.
🎯 Exploit Status
Public proof-of-concept available on GitHub demonstrates exploitation via POST request manipulation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.sourcecodester.com/
Restart Required: No
Instructions:
No official patch available. Consider implementing input validation and parameterized queries as workaround.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement server-side validation to sanitize stock_name1 parameter before processing.
Modify check_supplier_details.php to add: $stock_name1 = mysqli_real_escape_string($conn, $_POST['stock_name1']);
Web Application Firewall (WAF) Rules
allDeploy WAF rules to block SQL injection patterns in POST parameters.
Add WAF rule: Detect and block requests containing SQL keywords like UNION, SELECT, INSERT in POST body
🧯 If You Can't Patch
- Restrict network access to the application using firewall rules to only trusted IP addresses.
- Implement database user with minimal privileges (read-only if possible) for the application connection.
🔍 How to Verify
Check if Vulnerable:
Test by sending POST request to check_supplier_details.php with SQL injection payload in stock_name1 parameter and observe database errors or unexpected responses.Check Version:
Check application version in admin panel or review source code comments for version information.Verify Fix Applied:
Attempt same SQL injection payload after implementing fixes; should receive sanitized response or error without database exposure.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in web server logs
- Multiple failed login attempts or parameter manipulation in access logs
Network Indicators:
- POST requests to check_supplier_details.php containing SQL keywords in parameters
- Unusual database query patterns from web server IP
SIEM Query:
source="web_logs" AND uri="*check_supplier_details.php*" AND (param="*stock_name1*" AND value="*UNION*" OR value="*SELECT*" OR value="*INSERT*")