A cross-site scripting vulnerability exists in Nagios XI before 5.5.4 via the 'name' parameter within the Account Information page.

published 2019-06-19 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-8921

cvss: 5.4; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 3.5%; EPSS 3.5% chance of exploitation in 30 days, percentile 89%
public exploits: 0; none known

A cross-site scripting vulnerability exists in Nagios XI before 5.5.4 via the 'name' parameter within the Account Information page. Exploitation of this vulnerability allows an attacker to execute arbitrary JavaScript code within the auto login admin management page.

Patch / fix

fixed in 1

nagios nagios_xi 5.5.4

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-17146 updated 2025-11-21 cvss 6.1

Nagios-XI: cross-site scripting via 'name' parameter in Account Information page

Red Hat Storage 3 nagios, nagios-common
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.54% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
NVD	3.0	5.4	CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
NVD	2.0	3.5	AV:N/AC:M/Au:S/C:N/I:P/A:N

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

assets.nagios.com /downloads/nagiosxi/CHANGES-5.TXT
release-notes, vendor-advisory

Sources

CVE List CVE-2018-17146
NVD CVE-2018-17146

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary