Cross-Site Scripting Vulnerability in Nagios XI by Nagios
CVE-2021-47697

5.1MEDIUM

Key Information:

Vendor

NagiOS

Status
Xi
Vendor
CVE Published:
30 October 2025

What is CVE-2021-47697?

Nagios XI versions before 5.8.0 have a vulnerability where cross-site scripting (XSS) can occur due to improper URL handling in the Views feature. This flaw stems from inadequate validation or escaping of user input, potentially allowing attackers to inject malicious scripts. When successful, these attacks can execute arbitrary scripts in a victim's browser, leading to unauthorized actions and data exposure.

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Affected Version(s)

XI 0 < 5.8.0

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

Credit

Matthew Aberegg
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