What is CVE-2018-17147?

CVE-2018-17147 is a medium-severity vulnerability in Nagios Xi, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2019-07-10.

How severe is CVE-2018-17147?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Nagios Xi

CVE-2018-17147

Nagios XI before 5.5.4 has XSS in the auto login admin management page.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-07-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.027 (85.4th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 85th percentile — 85.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.027 · newest: 0.027 · change: 0.000

Affected products

Nagios Xi

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

assets.nagios.com/downloads/nagiosxi/CHANGES-5.TXT (Release Notes, Vendor Advisory)
www.securityfocus.com/bid/109116 (Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-17147?: CVE-2018-17147 is a medium-severity vulnerability in Nagios Xi, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2019-07-10.
How severe is CVE-2018-17147?: Medium severity. CVSS v3 base score is 4.8 out of 10.