Vulnerability advisory

GHSA-4fc4-4p5g-6w89

Cross-site Scripting in CKEditor4

Published Mar 16, 2022Updated Dec 10, 2025OSV record ↗

Also known as BIT-drupal-2022-24728BIT-drupal-2022-24729CVE-2022-24728CVE-2022-24729DRUPAL-CORE-2022-005GHSA-f6rf-9m92-x2hh

Severity

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

Affected versions

ckeditor4 npm

All ckeditor4 advisories →

Affected	Fixed in
All versions before 4.18.0	`4.18.0`Advisories →

Description

Affected packages

The vulnerability has been discovered in the core HTML processing module and may affect all plugins used by CKEditor 4.

Impact

A potential vulnerability has been discovered in CKEditor 4 HTML processing core module. The vulnerability allowed to inject malformed HTML bypassing content sanitization, which could result in executing JavaScript code. It affects all users using the CKEditor 4 at version < 4.18.0.

Patches

The problem has been recognized and patched. The fix will be available in version 4.18.0.

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 GHSL team member Kevin Backhouse (@kevinbackhouse) for recognizing and reporting this vulnerability.