MediumGHSA-4fc4-4p5g-6w89BIT-drupal-2022-24728BIT-drupal-2022-24729CVE-2022-24728CVE-2022-24729

Cross-site Scripting in CKEditor4

Published 16 Mar 2022 · Updated 10 Dec 2025

Affected package

ckeditor4npm

Affected: <4.18.0
Fixed in: 4.18.0

Update to the fixed version for your release line, for example:npm install ckeditor4@4.18.0

Details

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.

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References

Advisory data from OSV.dev (opens OSV.dev in a new tab), refreshed daily.