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A GitHub-reviewed security advisory, not necessarily under active exploitation the way our CISA KEV advisories are, but a real, disclosed vulnerability in an open-source dependency.
Affected packages
Vulnerable: >= 29.0.0, < 47.7.4
Patched in 47.7.4
Vulnerable: >= 29.0.0, < 47.7.4
Patched in 47.7.4
Vulnerable: >= 48.0.0, < 48.5.1
Patched in 48.5.1
Vulnerable: >= 48.0.0, < 48.5.1
Patched in 48.5.1
Details
A Cross-Site Scripting (XSS) vulnerability has been discovered in the CKEditor 5 engine. This vulnerability could be triggered by inserting specially crafted markup under a specific General HTML Support configuration that allows inserting objects, leading to unauthorized JavaScript code execution in a browser context isolated from the origin of the application embedding the editor.
This vulnerability affects only installations where General HTML Support is enabled and configured to allow the affected HTML content.
The problem has been recognized and patched. The fix will be available in version 48.5.1 (and above) and 47.7.4 (LTS).
Email us at [email protected] if you have any questions or comments about this advisory.
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