CVE-2021-25299

medium

Description

Nagios XI version xi-5.7.5 is affected by cross-site scripting (XSS). The vulnerability exists in the file /usr/local/nagiosxi/html/admin/sshterm.php due to improper sanitization of user-controlled input. A maliciously crafted URL, when clicked by an admin user, can be used to steal his/her session cookies or it can be chained with the previous bugs to get one-click remote command execution (RCE) on the Nagios XI server.

References

https://github.com/fs0c-sh/nagios-xi-5.7.5-bugs/blob/main/README.md

https://assets.nagios.com/downloads/nagiosxi/versions.php

http://packetstormsecurity.com/files/161561/Nagios-XI-5.7.5-Remote-Code-Execution.html

http://nagios.com

Details

Source: Mitre, NVD

Published: 2021-02-15

Updated: 2026-07-09

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Severity: Medium

EPSS

EPSS: 0.97714