Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
An issue was discovered in Squiz Matrix before 18.104.22.168 and 5.4.x before 22.214.171.124. There are multiple reflected Cross-Site Scripting (XSS) issues in Matrix WYSIWYG plugins.
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.