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

- 種別: advisory
- 重大度: high
- 関連技術: nodejs
- CVE: CVE-2026-116688
- 公開日時: 2026-10-27T21:05:06.000Z
- 情報源: GitHub Advisory Database (https://github.com/advisories/GHSA-rh54-vffm-5fvp)
- パーマリンク: https://vulnpulse.app/items/ghsa-ghsa-rh54-vffm-5fvp

影響: npm:ckeditor5 >= 45.0.0, < 47.7.4 → 47.7.4, npm:@ckeditor/ckeditor5-engine >= 45.0.0, < 47.7.4 → 47.7.4, npm:ckeditor5 >= 48.0.0, < 48.5.1 → 48.5.1, npm:@ckeditor/ckeditor5-engine >= 48.0.0, < 48.5.1 → 48.5.1
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…