CVE-2020-36864: Nagios XI versions prior to 5.7.2 are vulnerable to cross-site scripting (XSS) via the background color settings in…
CVE-2020-36864 · Severity: medium · CVSS 5.4 · Published 2025-10-30
Nagios XI versions prior to 5.7.2 are vulnerable to cross-site scripting (XSS) via the background color settings in Dashboards. Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the context of a victim's browser.
No. Junglewise Threat Intelligence has no report of CVE-2020-36864 being exploited in the wild.
How severe is CVE-2020-36864?
Medium severity, with a CVSS score of 5.4, published 30 October 2025.
Which products and versions are affected?
Nagios XI. The advisory does not name versions.
Is there a fix for CVE-2020-36864?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2020-36864?
Check whether you run Nagios XI. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.