CVE-2021-37223

Name: CVE-2021-37223
Creator: NVD / NIST
Published: 2021-10-05T12:15:07.853+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 7.51%

Last modified Jun 17, 2026

CVE-2021-37223 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. Nagios Enterprises NagiosXI <= 5.8.4 contains a Server-Side Request Forgery (SSRF) vulnerability in schedulereport.php. Any authenticated user can create scheduled reports containing PDF screenshots of any view in the NagiosXI application. EPSS estimates a 7.51% chance of exploitation in the next 30 days.

Description

Nagios Enterprises NagiosXI <= 5.8.4 contains a Server-Side Request Forgery (SSRF) vulnerability in schedulereport.php. Any authenticated user can create scheduled reports containing PDF screenshots of any view in the NagiosXI application. Due to lack of input sanitisation, the target page can be replaced with an SSRF payload to access internal resources or disclose local system files.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

7.51%

93.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-918

Affected Software

Vendor	Product	Versions
Nagios	Nagios Xi	<= 5.8.4

References

http://nagios.comVendor Advisory
https://www.nagios.com/downloads/nagios-xi/change-log/Release Notes, Vendor Advisory
http://nagios.comVendor Advisory
https://www.nagios.com/downloads/nagios-xi/change-log/Release Notes, Vendor Advisory

Timeline

Published: Oct 5, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-37223?

How severe is CVE-2021-37223?

CVE-2021-37223 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 7.51% probability of exploitation in the next 30 days.

How do I fix CVE-2021-37223?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-37223?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST