CVE-2017-20209CWE-79cross-site-scripting

CVE-2017-20209

Medium · published October 31, 2025

CVSS v3.1
6.1
EPSS
1%
Percentile
42.8
In the wild
Unconfirmed
What it is

Nagios Fusion versions prior to 4.0.1 are vulnerable to cross-site scripting (XSS) via the Users and Servers 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
6.1 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00516 · 42.8th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2025-10-31T02:15Z
Affected products (1)
ProductVersionsFixed in
nagios/fusionall versions—
References (2)
https://www.nagios.com/changelog/nagios-fusion/ · [email protected]https://www.vulncheck.com/advisories/nagios-fusion-xss-via-users-servers-page · [email protected]
EPSS history
Timeline
  • 30 OCT 21:22Z
    Nagios Fusion < 4.0.1 XSS via Users/Servers Page
    cvelistv5