Cross Site Scripting Defect Fix, Small Job, Easy quick fix JavaScript, HTML, JSP

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 test result seems to indicate a vulnerability because Appscan successfully embedded a script in the response, which will be executed when the page loads in the user's browser. Solution: Refer to Page 45 in the attached document (Review possible solutions for hazardous character injection) Issue reported on page 9,10,11, 12 of the PDF (only Cross Site Scripting) - Please check the detailed report Good knowledge of HTML, Cross Site Scripting, JavaScript, OWASP Framework etc 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. ***** 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.