MEDIUM

CVE-2019-20139

CVSS v3

5.4

MEDIUM

EPSS Score

26.1 %

exploit probability, as of 2026-10-19

CISA KEV

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2019-20139 yet.

Full record on NVD

Description

In Nagios XI 5.6.9, XSS exists via the nocscreenapi.php host, hostgroup, or servicegroup parameter, or the schedulereport.php hour or frequency parameter. Any authenticated user can attack the admin user.

Technical details

Published: 2019-12-30

Frequently asked questions

What is CVE-2019-20139?

Is CVE-2019-20139 actively exploited?

Active exploitation of CVE-2019-20139 has not been confirmed. Its EPSS score was 26.1% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2019-20139?

CVE-2019-20139 has a CVSS v3 base score of 5.4 (MEDIUM severity).

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