CVE-2021-33179

Description

The general user interface in Nagios XI versions prior to 5.8.4 is vulnerable to authenticated reflected cross-site scripting. An authenticated victim, who accesses a specially crafted malicious URL, would unknowingly execute the attached payload.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 57.68% Top 5%
Third-Party Advisory synopsys.com
Affected: Nagios Nagios XI
Published at:
Updated at:

References

Link Tags
https://www.synopsys.com/blogs/software-security/cyrc-advisory-nagios-xi third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-33179?
CVE-2021-33179 has been scored as a medium severity vulnerability.
How to fix CVE-2021-33179?
To fix CVE-2021-33179, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-33179 being actively exploited in the wild?
It is possible that CVE-2021-33179 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~58% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-33179?
CVE-2021-33179 affects Nagios Nagios XI.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.