CVE-2026-59167
Description
SunEditor is a lightweight and powerful WYSIWYG editor in vanilla JavaScript with no dependencies. Prior to 2.47.11, the sanitizer in src/lib/core.js does not consistently reject namespaced or custom HTML elements, allowing event-handler attributes to remain on crafted elements. When an application renders attacker-controlled editor content and a user interacts with the element, the retained handler can execute script in the application's browser origin, enabling stored cross-site scripting, data exposure, or unauthorized browser-context actions. This issue is fixed in version 2.47.11.
How to fix
- suneditor2.47.11 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| suneditornpm | v < 2.47.11 | 2.47.11 |
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Attack Surface Management
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