What is CVE-2021-42227?

CVE-2021-42227 is a medium-severity vulnerability in Kindsoft Kindeditor, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-10-14.

How severe is CVE-2021-42227?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2021-42227 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Kindsoft Kindeditor

CVE-2021-42227

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).

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.009 (56.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Kindsoft Kindeditor
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-42227?: CVE-2021-42227 is a medium-severity vulnerability in Kindsoft Kindeditor, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-10-14.
How severe is CVE-2021-42227?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2021-42227 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.