关键漏洞信息 1. SQL Injection Vulnerability Location: Line 150 Code: is directly used in a query without proper sanitization. Impact: An attacker can inject malicious SQL code to manipulate the database. 2. Cross-Site Scripting (XSS) Vulnerability Location: Line 790 Code: is echoed directly without escaping. Impact: An attacker can inject JavaScript code to execute on the client side. 3. Insecure File Upload Location: Line 640 Code: File uploads are not properly validated or sanitized. Impact: An attacker can upload malicious files, potentially leading to Remote Code Execution (RCE). 4. Lack of Input Validation General Issue: Multiple instances where user inputs ( , ) are used without proper validation or sanitization. Impact: Various injection attacks and data manipulation risks. 5. Hardcoded Credentials Location: Not explicitly shown but potential risk if credentials are hardcoded in the script. Impact: Exposure of sensitive information if the code is compromised. Recommendations Implement proper input validation and sanitization. Use prepared statements for SQL queries. Escape output to prevent XSS attacks. Validate file types and content during uploads. Avoid hardcoding sensitive information.