CVE-2021-47690CWE-79

Nagios XI < 5.8.2 Core Config Manager (CCM) XSS via Overlay Modals

Medium · published October 30, 2025

CVSS v4.0
5.1
EPSS
0%
Percentile
35.2
In the wild
Unconfirmed
What it is

The Core Config Manager (CCM) in Nagios XI versions prior to CCM 3.1.1 / Nagios XI 5.8.2 contains multiple cross-site scripting (XSS) vulnerabilities in Overlay modals. 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.

The record
Technical detail
CVSS v4.0
5.1 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
EPSS
0.00420 · 35.2th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2025-10-30T21:35Z
EPSS history
Timeline
  • 30 OCT 21:35Z
    Nagios XI < 5.8.2 Core Config Manager (CCM) XSS via Overlay Modals
    cvelistv5