Reflected Cross-Site Scripting (XSS) Vulnerabilities on Scriptcase

I scanned the scriptcase app with Qualys Scan (Vulnerability scan management) and I see Level 5 security vulnerability: Reflected Cross-Site Scripting (XSS) Vulnerabilities How to fix these Vulnerabilities?

10 Practical scenarios for XSS attacks

Setting HttpOnly in Cookies - Programming - Scriptcase

How to perform various cross-site scripting attacks

XSS: Principles, Attacks and Security Best Practices

Grid export function affected by Reflected Cross-Site Scripting

Uncovering Attacks: Cross-site Scripting (XSS)

PDF) IEEE TRANSACTIONS ON RELIABILITY 1 Automated Detecting and

Everything about Cross-Site Scripting (XSS)

Everything about Cross-Site Scripting (XSS)