Cross-Site Scripting Vulnerability in Nagios XI by Nagios
CVE-2018-25121

5.1MEDIUM

Key Information:

Vendor

NagiOS

Status
Xi
Vendor
CVE Published:
30 October 2025

What is CVE-2018-25121?

Certain versions of Nagios XI are affected by a cross-site scripting vulnerability through the Views page of the web interface. The lack of proper validation and escaping of user-supplied input allows attackers to inject malicious scripts, which can then be executed in the context of the victim's browser. This poses significant security risks, enabling attackers to manipulate user sessions or steal sensitive information.

Affected Version(s)

XI 0 < 5.4.13

References

https://www.nagios.com/changelog/nagios-xi/
release-notespatch
https://www.vulncheck.com/advisories/nagios-xi-xss-via-vi...
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2018-25121 : Cross-Site Scripting Vulnerability in Nagios XI by Nagios