Clipboard feature vulnerability allowing to inject arbitrary HTML into the editor using paste functionality
Moderate severity
GitHub Reviewed
Published
Aug 12, 2021
in
ckeditor/ckeditor4
•
Updated Feb 1, 2023
Description
Published by the National Vulnerability Database
Aug 12, 2021
Reviewed
Aug 23, 2021
Published to the GitHub Advisory Database
Aug 23, 2021
Last updated
Feb 1, 2023
Affected packages
The vulnerability has been discovered in clipboard plugin. All plugins with clipboard plugin dependency are affected:
Impact
A potential vulnerability has been discovered in CKEditor 4 Clipboard package. The vulnerability allowed to abuse paste functionality using malformed HTML, which could result in injecting arbitrary HTML into the editor. It affects all users using the CKEditor 4 plugins listed above at version >= 4.5.2.
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 Anton Subbotin (skavans) for recognizing and reporting this vulnerability.
References