Key Information Summary Affected Product Name: Phpgurukul e-Diary Management System V1.0 Affected File: manage-categories.php Version: v1.0 Vulnerability Type Type: SQL Injection Root Cause Issue: In the file, attackers can inject malicious code via the parameter, which is directly used in SQL queries without proper sanitization or validation. Impact Risk: Attackers can exploit this vulnerability to gain unauthorized database access, exfiltrate sensitive data, modify or delete data, achieve full system control, or cause service disruption, posing a severe threat to system security and business continuity. Description Discovery: During a security review of the "e-Diary Management System", a critical SQL injection vulnerability was identified in the file. The vulnerability stems from insufficient validation of user input for the parameter, allowing attackers to inject malicious SQL queries. As a result, attackers can gain unauthorized access to the database, modify or delete data, and access sensitive information. Vulnerability Details and POC Exploitable without login or authorization Vulnerable Parameter: id Payload Example: Recommended Remediation Measures 1. Use prepared statements with parameter binding. 2. Implement input validation and filtering. 3. Minimize database user privileges. 4. Conduct regular security audits.