Key Information Affected Product Product Name: Payroll Management System V1.0 Vendor Homepage: https://www.campcodes.com/projects/php/payroll-management-system-in-php-mysql-free-download/ Vulnerable File and Version Vulnerable File: /Payroll_Management_System/ajax.php?action=save_payroll Affected Version: V1.0 Vulnerability Type Type: SQL Injection Root Cause The code directly retrieves malicious input from the parameter and uses it in SQL queries without proper sanitization or validation. Impact Attackers can exploit this vulnerability to achieve unauthorized database access, sensitive data exposure, data tampering, disruption of system control, and even service denial, posing a serious threat to system security and business continuity. Description During the review of "Payroll Management System", an SQL injection vulnerability was discovered in the file. Due to insufficient input validation for the parameter, attackers can inject malicious SQL queries, leading to unauthorized database access, data modification or deletion, and exposure of sensitive information. Vulnerability Details and POC Location: parameter Payload: Recommended Remediation 1. Use prepared statements and parameter binding. 2. Implement input validation and filtering. 3. Minimize database user privileges. 4. Conduct regular security audits.