Vulnerability advisory

GHSA-m94c-37g6-cjhc

Fake objects feature vulnerability allowing to execute JavaScript code using malformed HTML.

Published Aug 23, 2021Updated Jul 8, 2026OSV record ↗

Also known as CVE-2021-37695

Severity

CVSS 3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

Affected versions

ckeditor4 npm

All ckeditor4 advisories →

Affected	Fixed in
All versions before 4.16.2	`4.16.2`Advisories →

Description

Affected packages

The vulnerability has been discovered in Fake Objects plugin. All plugins with Fake Objects plugin dependency are affected:

Impact

A potential vulnerability has been discovered in CKEditor 4 Fake Objects package. The vulnerability allowed to inject malformed Fake Objects HTML, which could result in executing JavaScript code. It affects all users using the CKEditor 4 plugins listed above at version < 4.16.2.

Patches

The problem has been recognized and patched. The fix will be available in version 4.16.2.

For more information

Email us at security@cksource.com if you have any questions or comments about this advisory.

Acknowledgements

The CKEditor 4 team would like to thank Mika Kulmala (kulmik) for recognizing and reporting this vulnerability.