CVE-2021-42227

Name: CVE-2021-42227
Creator: NVD / NIST
Published: 2021-10-14T17:15:08.787+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.91%

Last modified Jun 17, 2026

CVE-2021-42227 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Cross SIte Scripting (XSS) vulnerability exists in KindEditor 4.1.x via a Google search inurl:/examples/uploadbutton.html and then the .html file on the website that uses this editor (the file suffix is allowed).. EPSS estimates a 0.91% chance of exploitation in the next 30 days.

Description

Cross SIte Scripting (XSS) vulnerability exists in KindEditor 4.1.x via a Google search inurl:/examples/uploadbutton.html and then the .html file on the website that uses this editor (the file suffix is allowed).

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.91%

55.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Kindsoft	Kindeditor	>= 4.1, <= 4.1.12

References

https://github.com/kindsoft/kindeditor/issues/336Exploit, Third Party Advisory
https://github.com/kindsoft/kindeditor/issues/336Exploit, Third Party Advisory

Timeline

Published: Oct 14, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-42227?

How severe is CVE-2021-42227?

CVE-2021-42227 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.91% probability of exploitation in the next 30 days.

How do I fix CVE-2021-42227?

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-2021-42227?

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

Scan your code now

Source: NVD / NIST