What is CVE-2018-12501?

CVE-2018-12501 is a medium-severity vulnerability in Nagios Fusion, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-06-16.

How severe is CVE-2018-12501?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Nagios Fusion

CVE-2018-12501

Nagios Fusion before 4.1.4 has XSS, aka TPS#13332-13335.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-06-16 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.017 (76.0th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 76.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

Nagios Fusion

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.nagios.com/downloads/nagios-fusion/change-log/ (Vendor Advisory)

Frequently asked questions

What is CVE-2018-12501?: CVE-2018-12501 is a medium-severity vulnerability in Nagios Fusion, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-06-16.
How severe is CVE-2018-12501?: Medium severity. CVSS v3 base score is 6.1 out of 10.