CKEditor: Cross-site scripting (XSS) in the engine package

CAO 8.1CVE-2026-116688 · GHSA-rh54-vffm-5fvp · Công bố 27/10/2026 · cập nhật 28/10/2026

Tóm tắt nhanh

CVE-2026-116688 là lỗ hổng mức CAO (CVSS 8.1) ảnh hưởng @ckeditor/ckeditor5-engine, ckeditor5.
Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.50%, cao hơn 42.7% các lỗ hổng khác.
Cách xử lý: cập nhật lên 47.7.4, 48.5.1 hoặc mới hơn.

Gói / sản phẩm	Phiên bản bị ảnh hưởng	Phiên bản đã vá
@ckeditor/ckeditor5-engine npm	`≥ 45.0.0, < 47.7.4≥ 48.0.0, < 48.5.1`	`47.7.448.5.1`
ckeditor5 npm	`≥ 45.0.0, < 47.7.4≥ 48.0.0, < 48.5.1`	`47.7.448.5.1`

Mô tả

Impact

A Cross-Site Scripting (XSS) vulnerability has been discovered in the CKEditor 5 engine. This vulnerability is caused by a prototype pollution issue in the es-toolkit library used in the CKEditor 5 codebase. This vulnerability could lead to unauthorized JavaScript code execution when the editor processes incoming style attribute values.

The underlying issue has been patched by the library maintainers, and the fix has been incorporated into CKEditor 5.

Patches

The problem has been recognized and patched. The fix will be available in version 48.5.1 (and above) and 47.7.4 (LTS).

For more information

Email us at [email protected] if you have any questions or comments about this advisory.

Mô tả của NVD

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.