Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CKEditor 5 is a JavaScript rich text editor. A cross-site scripting vulnerability has been discovered affecting three optional CKEditor 5's packages in versions prior to 35.0.1. The vulnerability allowed to trigger a JavaScript code after fulfilling special conditions. The affected packages are @ckeditor/ckeditor5-markdown-gfm, @ckeditor/ckeditor5-html-support, and @ckeditor/ckeditor5-html-embed. The specific conditions are 1) Using one of the affected packages. In case of ckeditor5-html-support and ckeditor5-html-embed, additionally, it was required to use a …