Description
CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. From 45.0.0 until 47.7.4 and 48.5.1, the engine uses a vulnerable es-toolkit version whose prototype-pollution behavior can be reached while CKEditor processes incoming style attribute values. Crafted editor content can thereby cause unauthorized JavaScript execution in the browser. This issue is fixed in versions 47.7.4 and 48.5.1.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
ckeditor ckeditor5
>= 45.0.0, < 47.7.4affected>= 48.0.0, < 48.5.1affected
References
- https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-rh54-vffm-5fvp ↗
- https://github.com/ckeditor/ckeditor5/commit/4d9c5bb34f63cd956d15ccafbe584e14280c86a0 ↗
- https://github.com/ckeditor/ckeditor5/commit/a750e38635db6a18c5b11599c09f4fd702850423 ↗
- https://github.com/ckeditor/ckeditor5/releases/tag/v47.7.4 ↗
- https://github.com/ckeditor/ckeditor5/releases/tag/v48.5.1 ↗