CVE-2021-24539

Name: CVE-2021-24539
Creator: NVD / NIST
Published: 2021-11-01T09:15:08.447+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.8/10EPSS 0.57%

Last modified Jun 17, 2026

CVE-2021-24539 is a medium-severity vulnerability rated 4.8/10 on the CVSS scale. The Coming Soon, Under Construction & Maintenance Mode By Dazzler WordPress plugin before 1.6.7 does not sanitise or escape its description setting when outputting it in the frontend when the Coming Soon mode is enabled, even when the unfiltered_html capability is disallowed, leading to an authenticated Stored Cross-Site Scripting issue. EPSS estimates a 0.57% chance of exploitation in the next 30 days.

Description

The Coming Soon, Under Construction & Maintenance Mode By Dazzler WordPress plugin before 1.6.7 does not sanitise or escape its description setting when outputting it in the frontend when the Coming Soon mode is enabled, even when the unfiltered_html capability is disallowed, leading to an authenticated Stored Cross-Site Scripting issue

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

0.57%

42.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Dazzlersoftware	Coming Soon\, Under Construction \& Maintenance Mode By Dazzler	< 1.6.7

References

https://wpscan.com/vulnerability/4bda5dff-f577-4cd8-a225-c6b4c32f22b4Exploit, Third Party Advisory
https://wpscan.com/vulnerability/4bda5dff-f577-4cd8-a225-c6b4c32f22b4Exploit, Third Party Advisory

Timeline

Published: Nov 1, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-24539?

How severe is CVE-2021-24539?

CVE-2021-24539 has a CVSS score of 4.8/10 (MEDIUM severity). The EPSS model estimates a 0.57% probability of exploitation in the next 30 days.

How do I fix CVE-2021-24539?

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-2021-24539?

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

Scan your code now

Source: NVD / NIST