Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Multiple cross-site scripting (XSS) vulnerabilities in the adminutil library in the Directory Server Administration Express and Directory Server Gateway (DSGW) web interface in Red Hat Directory Server 7.1 before SP7 and 8 EL4 and EL5, and Fedora Directory Server, allow remote attackers to inject arbitrary web script or HTML via input values that use % (percent) escaping.
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.