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Nagios XI Cross-Site Scripting Vulnerability in Graph Explorer Component

Vulnerability

A cross-site scripting (XSS) vulnerability has been identified in Nagios XI versions prior to 5.11.3. The issue arises in the Graph Explorer component, where insufficient validation or escaping of user-supplied input allows for the injection and execution of arbitrary scripts in the context of the victim's browser.

Impact

Exploitation of this vulnerability allows for cross-site scripting, where an attacker can inject malicious scripts that are executed in the context of the user's browser.

Remediation

Users can upgrade to Nagios XI version 5.11.3 or later to address this vulnerability.

Added: Oct 30, 2025, 11:09 PM
Updated: Oct 30, 2025, 11:09 PM

Vulnerability Rating

Custom Algorithm
spread
5.0
impact
1.7
exploitability
5.0
remediation
7.7
relevance
0.9
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.