CVE-2026-116687
Low
Description
CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. From 29.0.0 until 47.7.4 and 48.5.1, specially crafted markup can trigger cross-site scripting when General HTML Support is enabled and specifically configured to allow object content. Processing that content can execute attacker-controlled JavaScript in a browser context isolated from the origin of the application embedding the editor. This issue is fixed in versions 47.7.4 and 48.5.1.
SeverityLow
CVSS3.1
Exploit probability—
ProductCkeditor5
PublishedOct 27, 2026
First seenOct 27, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- ckeditor547.7.4, 48.5.1 or later
- @ckeditor/ckeditor5-engine47.7.4, 48.5.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ckeditor5npm | 29.0.0 ≤ v < 47.7.4, 48.0.0 ≤ v < 48.5.1 | 47.7.4, 48.5.1 |
| @ckeditor/ckeditor5-enginenpm | 29.0.0 ≤ v < 47.7.4, 48.0.0 ≤ v < 48.5.1 | 47.7.4, 48.5.1 |
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