CVE-2021-38156
In Nagios XI before 5.8.6, XSS exists in the dashboard page (/dashboards/#) when administrative...
In Nagios XI before 5.8.6, XSS exists in the dashboard page (/dashboards/#) when administrative users attempt to edit a dashboard.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
In Nagios XI before 5.8.6, XSS exists in the dashboard page (/dashboards/#) when administrative users attempt to edit a dashboard.
- Record
CVE-2021-38156- CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 3.5 Low
AV:N/AC:M/Au:S/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
CVE ListNo score
In Nagios XI before 5.8.6, XSS exists in the dashboard page (/dashboards/#) when administrative users attempt to edit a dashboard.
- Record
CVE-2021-38156- Updated
- 2026-11-02
EUVDEUVD-2021-24626No score
In Nagios XI before 5.8.6, XSS exists in the dashboard page (/dashboards/#) when administrative users attempt to edit a dashboard.
- Record
EUVD-2021-24626- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2cr4-q4vr-2q6rNo score
In Nagios XI before 5.8.6, XSS exists in the dashboard page (/dashboards/#) when administrative...
In Nagios XI before 5.8.6, XSS exists in the dashboard page (/dashboards/#) when administrative users attempt to edit a dashboard.
- Record
GHSA-2cr4-q4vr-2q6r- Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Nuclei | Nagios XI < 5.8.6 - Cross-Site Scripting |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, Nuclei, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-38156 is a medium vulnerability (CVSS 5.4) in Nagios Xi, published September 15, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 92.9%, the 99th percentile. No source names a fixed version.