Detections
Analytics
CVE-2026-116688
high
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.
References
https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-rh54-vffm-5fvp
https://github.com/ckeditor/ckeditor5/releases/tag/v48.5.1
https://github.com/ckeditor/ckeditor5/releases/tag/v47.7.4
https://github.com/ckeditor/ckeditor5/commit/a750e38635db6a18c5b11599c09f4fd702850423
https://github.com/ckeditor/ckeditor5/commit/4d9c5bb34f63cd956d15ccafbe584e14280c86a0