Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
A vulnerability, which was classified as problematic, has been found in School Club Application System 1.0. This issue affects access to /scas/admin/. The manipulation of the parameter page with the input %22%3E%3Cimg%20src=x%20onerror=alert(1)%3E leads to a reflected cross site scripting. The attack may be initiated remotely and does not require any form of authentication. The exploit has been disclosed to the public and may be used.
CWE-79 - Cross Site Scripting
Cross-Site Scripting, commonly referred to as XSS, is the most dominant class of vulnerabilities. It allows an attacker to inject malicious code into a pregnable web application and victimize its users. The exploitation of such a weakness can cause severe issues such as account takeover, and sensitive data exfiltration. Because of the prevalence of XSS vulnerabilities and their high rate of exploitation, it has remained in the OWASP top 10 vulnerabilities for years.