CVE-2021-43584

Name: CVE-2021-43584
Creator: NVD / NIST
Published: 2024-01-24T20:15:53.61+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 1.20%

Last modified Jun 17, 2026

CVE-2021-43584 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. DOM-based Cross Site Scripting (XSS vulnerability in 'Tail Event Logs' functionality in Nagios Nagios Cross-Platform Agent (NCPA) before 2.4.0 allows attackers to run arbitrary code via the name element when filtering for a log.. EPSS estimates a 1.20% chance of exploitation in the next 30 days.

Description

DOM-based Cross Site Scripting (XSS vulnerability in 'Tail Event Logs' functionality in Nagios Nagios Cross-Platform Agent (NCPA) before 2.4.0 allows attackers to run arbitrary code via the name element when filtering for a log.

Metrics

CVSS 3.1

4.8/10

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

EPSS Probability

1.20%

64.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Nagios	Nagios Cross Platform Agent	< 2.4.0

References

https://github.com/NagiosEnterprises/ncpa/issues/830Exploit, Issue Tracking, Third Party Advisory
https://github.com/NagiosEnterprises/ncpa/issues/830Exploit, Issue Tracking, Third Party Advisory

Timeline

Published: Jan 24, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-43584?

How severe is CVE-2021-43584?

CVE-2021-43584 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 1.20% probability of exploitation in the next 30 days.

How do I fix CVE-2021-43584?

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-2021-43584?

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

Scan your code now

Source: NVD / NIST