CVE-2021-4227

Name: CVE-2021-4227
Creator: NVD / NIST
Published: 2024-01-16T16:15:09.27+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.61%

Last modified Jun 17, 2026

CVE-2021-4227 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. The ark-commenteditor WordPress plugin through 2.15.6 does not properly sanitise or encode the comments when in Source editor, allowing attackers to inject an iFrame in the page and thus load arbitrary content from any page to the comment section. EPSS estimates a 0.61% chance of exploitation in the next 30 days.

Description

The ark-commenteditor WordPress plugin through 2.15.6 does not properly sanitise or encode the comments when in Source editor, allowing attackers to inject an iFrame in the page and thus load arbitrary content from any page to the comment section

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.61%

44.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-74

Affected Software

Vendor	Product	Versions
Obg	Ark Wysiwyg Comment Editor	<= 2.15.6

References

https://wpscan.com/vulnerability/8d015eba-31dc-44cb-a051-4e95df782b75/Exploit, Third Party Advisory
https://wpscan.com/vulnerability/8d015eba-31dc-44cb-a051-4e95df782b75/Exploit, Third Party Advisory

Timeline

Published: Jan 16, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-4227?

How severe is CVE-2021-4227?

CVE-2021-4227 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.61% probability of exploitation in the next 30 days.

How do I fix CVE-2021-4227?

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-2021-4227?

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

Scan your code now

Source: NVD / NIST