关键漏洞信息 XSS vulnerability potential The code handles POST data without proper sanitization. values are directly used to set variables, which could lead to XSS attacks. Potential Insecure Direct Object References User input is directly used in file operations without validation. The file permission check and usage can be manipulated. Input Validation Issues Minimal input validation for form fields. Possible injection vectors if user input is not properly sanitized. Recommendations Implement proper input sanitization. Validate all user inputs before processing. Ensure file operations are secure and permissions are correctly set.