CVE-2020-36858CWE-79cross-site-scripting

CVE-2020-36858

Medium · published October 31, 2025

CVSS v3.1

5.4

EPSS

Percentile

42.7

In the wild

Unconfirmed

What it is

Nagios Log Server versions prior to 2.1.6 contain cross-site scripting (XSS) vulnerabilities via the web interface on the Create User, Edit User, and Manage Host Lists pages. 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 v3.1: 5.4 · MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0: Not supplied
EPSS: 0.00511 · 42.7th percentile
Weakness: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published: 2025-10-31T02:15Z

Affected products (1)

Product	Versions	Fixed in
nagios/log_server	< 2.1.6	2.1.6

References (2)

https://www.nagios.com/changelog/nagios-log-server-2024r1/ · [email protected]https://www.vulncheck.com/advisories/nagios-log-server-xss-via-create-user-edit-user-and-manage-host-lists-pages · [email protected]

EPSS history

Timeline

30 OCT 21:26Z
Nagios Log Server < 2.1.6 XSS via Create User, Edit User, & Manage Host Lists Pages
cvelistv5