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Nagios XI Stored Cross-Site Scripting Vulnerability in My Tools Page

Vulnerability

A stored cross-site scripting vulnerability has been identified in Nagios XI versions prior to 5.8.0. This issue arises from insufficient validation or escaping of user input on the My Tools page, allowing attackers to inject and execute arbitrary scripts in the context of the victim's browser.

Impact

Exploitation of this vulnerability allows for stored cross-site scripting, where injected scripts are executed in the context of the user.

Remediation

Users can upgrade to Nagios XI version 5.8.0 or later to address this vulnerability.

Added: Oct 30, 2025, 11:30 PM
Updated: Oct 30, 2025, 11:30 PM

Vulnerability Rating

Custom Algorithm
spread
5.0
impact
1.0
exploitability
5.0
remediation
0.0
relevance
0.8
threat
0.0
urgency
2.9
incentive
1.7

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.