CVE-2023-53689CWE-79cross-site-scripting

CVE-2023-53689

Medium · published October 31, 2025

CVSS v3.1
4.8
EPSS
1%
Percentile
58.9
In the wild
Unconfirmed
What it is

Nagios Fusion versions prior to 4.2.0 contain a reflected cross-site scripting (XSS) vulnerability in the license key configuration flow that can result in execution of attacker-controlled script in the browser of a user who follows a crafted URL. While the application server itself is not directly corrupted by the reflected XSS, the resulting browser compromise can lead to credential/session theft and unauthorized administrative actions.

The record
Technical detail
CVSS v3.1
4.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00885 · 58.9th 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/fusion< 4.2.04.2.0
References (3)
https://www.nagios.com/changelog/nagios-fusion/ · [email protected]https://www.nagios.com/products/security/#fusion · [email protected]https://www.vulncheck.com/advisories/nagios-fusion-license-information-reflected-xss · [email protected]
EPSS history
Timeline
  • 30 OCT 21:20Z
    Nagios Fusion < 4.2.0 License Information Reflected XSS
    cvelistv5