Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Reflected cross-site scripting in graph results in multiple versions of OpenNMS Meridian versions prior to 2020.1.32, 2021.1.x prior to 2021.1.24, 2022.1.x prior to 2022.1.13 and in Horizon versions prior to 31.0.4 could allow an attacker access to steal session cookies. Meridian and Horizon installation instructions state that they are intended for installation within an organization's private networks and should not be directly accessible from the Internet.
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.