Unrestricted File Upload is a critical vulnerability that can lead to severe security risks in web applications, including Laravel-based systems.The risks of unrestricted file upload include server-side code execution, sensitive data breaches, and denial of service (DoS) attacks.To prevent unrestricted file upload in Laravel, proper validation and security measures should be implemented.Regularly testing your website with tools like the Free Website Security Checker can help identify and mitigate vulnerabilities.