CVE-2021-47698

MEDIUM

Nagios XI < 5.8.7 - Cross-Site Scripting via Core UI Views URL Handling

Title source: llm
STIX 2.1

Description

Nagios XI versions prior to 5.8.7 using embedded Nagios Core are vulnerable to cross-site scripting (XSS) via the Core UI’s Views URL handling (escape_string()). Insufficient validation or escaping of user-supplied input may allow an attacker to inject and execute arbitrary script in the context of a victim's browser.

References (2)

Core 2
Core References
Release Notes release-notes patch
https://www.nagios.com/changelog/nagios-xi/

Scores

CVSS v3 5.4
EPSS 0.0037
EPSS Percentile 59.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (1)
nagios/nagios_xi < 5.8.7
Published Nov 03, 2025
Tracked Since Feb 18, 2026