Stored Cross-Site Scripting Vulnerability in Nagios XI by Nagios
CVE-2021-47695

5.1MEDIUM

Key Information:

Vendor

NagiOS

Status
Xi
Vendor
CVE Published:
30 October 2025

What is CVE-2021-47695?

Nagios XI versions prior to 5.8.0 are susceptible to a stored cross-site scripting vulnerability through the My Tools page. This issue arises from inadequate validation or escaping of user-supplied input, which enables an attacker to inject and execute malicious scripts within the victim's web browser context. This vulnerability underscores the importance of input validation and may lead to data leakage or unauthorized actions if exploited.

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-my...
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
JSON
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CVE-2021-47695 : Stored Cross-Site Scripting Vulnerability in Nagios XI by Nagios