The "NagVis" component within Checkmk is vulnerable to reflected cross-site scripting. An attacker can craft a malicious link that will execute arbitrary JavaScript in the context of the browser once clicked. The attack can be performed on both authenticated and unauthenticated users.
- http://www.openwall.com/lists/oss-security/2025/02/04/3
- https://korelogic.com/Resources/Advisories/KL-001-2025-001.txt
- https://github.com/w4zu/Debian_security