What’s Vulnerable › Vulnerabilities

CVE-2021-38156

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 92.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-09-15 · updated 2026-06-17
• Weakness: CWE-79

Description

In Nagios XI before 5.8.6, XSS exists in the dashboard page (/dashboards/#) when administrative users attempt to edit a dashboard.

Affected products

• Nagios XI: before 5.8.6 — fixed in 5.8.6

How to fix

Upgrade to a fixed version: Nagios XI 5.8.6. Check the vendor advisory for mitigations.

References

• https://raxis.com/blog/cve-2021-38156
• https://www.nagios.com/downloads/nagios-xi/change-log/
• https://raxis.com/blog/cve-2021-38156
• https://www.nagios.com/downloads/nagios-xi/change-log/

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