Affected packages
- ckeditor5-engine
- ckeditor5-font
- ckeditor5-image
- ckeditor5-list
- ckeditor5-markdown-gfm
- ckeditor5-media-embed
- ckeditor5-paste-from-office
- ckeditor5-widget
Impact
A regular expression denial of service (ReDoS) vulnerability has been discovered in multiple CKEditor 5 packages. The vulnerability allowed to abuse particular regular expressions, which could cause a significant performance drop resulting in a browser tab freeze. It affects all users using the CKEditor 5 packages listed above at version <= 26.0.0.
Patches
The problem has been recognized and patched. The fix will be available in version 27.0.0.
For more information
Email us at security@cksource.com if you have any questions or comments about this advisory.
Acknowledgements
The CKEditor 5 team would like to thank Yeting Li for recognizing and reporting these vulnerabilities.
Affected packages
Impact
A regular expression denial of service (ReDoS) vulnerability has been discovered in multiple CKEditor 5 packages. The vulnerability allowed to abuse particular regular expressions, which could cause a significant performance drop resulting in a browser tab freeze. It affects all users using the CKEditor 5 packages listed above at version <= 26.0.0.
Patches
The problem has been recognized and patched. The fix will be available in version 27.0.0.
For more information
Email us at security@cksource.com if you have any questions or comments about this advisory.
Acknowledgements
The CKEditor 5 team would like to thank Yeting Li for recognizing and reporting these vulnerabilities.