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CKEditor 5 v10.0.1 with a security patch released

CKEditor 5 with a security patch release

We would like to announce the release of CKEditor 5 v10.0.1 that contains a security fix for the Link package, so an upgrade is highly recommended for all CKEditor 5 installations that include it. Additionally, this release fixes an issue with the decoupled editor that blocked enabling real-time collaboration in this editor.

# Security issue fixed

CKEditor 5 v10.0.1 fixes a cross-site scripting (XSS) issue in the @ckeditor/ckeditor5-link package. The vulnerability allowed remote attackers to inject an arbitrary web script through a crafted href attribute of a link (<a>) element.

Note that all official CKEditor 5 builds as well as all custom builds which included this package are affected.

CKEditor 5 versions affected: v0.3.0 and later.

This issue was reported independently by Toan Chi Nguyen from Techlab Corporation and Michal Bazyli. Thank you!

# Other fixes

Other than that, this release fixes an issue with asynchronous data initialization in the decoupled editor class which blocked enabling real-time collaboration in this editor.

# Download

CKEditor 5 builds can be downloaded from the CDN, npm or as zip packages. Read more in the Installation guide.

# License

CKEditor 5 is available under Open Source and Commercial licenses. Full details can be found on our license page.

# Reporting issues and contributing

You can report all general issues in the main CKEditor 5 repository. Read more in the Reporting issues guide.

# Support

The project documentation is growing and always up to date. Community support is available through Stack Overflow. Read more in the Getting support guide.

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