Cross-Site Scripting (XSS) vulnerabilities in Anuj Kumar's Client Management System Version 1.2 allow local attackers to inject arbitrary web script or HTML via the search input field parameter to admin search invoice page and client search invoice page.
https://phpgurukul.com/client-management-system-using-php-mysql/
https://gist.github.com/Esquirez/0c41e0279ca11d9bfc52c3938041d935