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@ckeditor/ckeditor5-clipboard@42.0.0-alpha.20 vulnerabilities

Clipboard integration feature for CKEditor 5.

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Direct Vulnerabilities

Known vulnerabilities in the @ckeditor/ckeditor5-clipboard package. This does not include vulnerabilities belonging to this package’s dependencies.

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Vulnerability Vulnerable Version
  • L
Cross-site Scripting (XSS)

@ckeditor/ckeditor5-clipboard is a Clipboard integration feature for CKEditor 5.

Affected versions of this package are vulnerable to Cross-site Scripting (XSS) via the clipboard handling process. An attacker can execute unauthorized JavaScript code by inserting malicious content into the editor under specific configurations.

Note:

This is only exploitable if the Block Toolbar plugin is enabled and either the General HTML Support or HTML Embed plugins are enabled with configurations that permit unsafe markup.

How to fix Cross-site Scripting (XSS)?

Upgrade @ckeditor/ckeditor5-clipboard to version 43.1.1 or higher.

>=40.0.0 <43.1.1
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