JavaScript, JSP, Cross Site Scripting Bug Fix, Easy Quick Simple few hours job

There are web security issues in small 4 page web application. There are 2 defects that needs to be fixed related to Cross Site Scripting. Issue 1: General: CSS issue when uploading a file. (HTML, JavaScript, JSP code) Causes: Sanitation of hazardous characters was not performed correctly on user input Reasoning: The tester successfully embedded a script in the response, which will be executed when the page loads in the user's browser. Solution: The script embedded should not be able to execute on the users browser. Apply C:out JSP tag, and validate the file upload in javascript to only allow .xlsx file to be uploaded. Refer to the attached project for more information. Refer to the source code. Good knowledge of HTML, Cross Site Scripting, JavaScript, JSP will help to complete this project. Complete technical support will be available. Any questions or queries or technical assistance will be provided. Support via skype/video conference or conversation will be provided. Please ask questions if you need help with the requirements. The code is located in file Maven_Development_Branch\MLE_UI\MLEWeb\src\main\webapp\jsp\[login to view URL] \Maven_Development_Branch\MLE_UI\MLEWeb\src\main\java\com\amex\nms\presentation\controller\[login to view URL] Maven_Development_Branch\MLE_UI\MLEWeb\src\main\webapp\jsp\[login to view URL] the zip file contains source code and ***** You will be awarded this project and excellent feedback for good work. I am 5.0/5.0 employer. I will create 100% Milestone Money. It will be fun, exciting to work together. The project would take approx. few hours for good developer. I will have more project to share in future. 100% clear requirements will be provided. The bidder with good reputation would be selected. Questions are always welcomed. *** Please bid accordingly the maximum budget for this project is $50 only. Source code will be provided.