Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Grafana is an open-source platform for monitoring and observability. Versions 8.0.x prior to 8.3.10, 8.4.x prior to 8.4.10, 8.5.x prior to 8.5.9 and 9.0.x prior to 9.0.3 are vulnerable to stored cross-site scripting via the Unified Alerting feature of Grafana. An attacker can exploit this vulnerability to escalate privilege from editor to admin by tricking an authenticated admin to click on a link. As a workaround, it is possible to disable alerting or use legacy alerting.
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.