Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Pimcore Admin Classic Bundle provides a Backend UI for Pimcore based on the ExtJS framework. An admin who has not setup Two Factor Authentication before is vulnerable for this attack, without need for any form of privilege, causing the application to execute arbitrary scripts/HTML content. This vulnerability affects pimcore/admin-ui-classic-bundle versions through 1.0.2 and pimcore/pimcore versions v11.0.0-ALPHA5 through v11.0.0-ALPHA8.
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.