{"schema":"threatline.record/2","record":{"id":"CVE-2026-116688","aliases":["GHSA-rh54-vffm-5fvp"],"summary":"CKEditor: Cross-site scripting (XSS) in the engine package","details":"### Impact\nA 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.\n\nThe underlying issue has been patched by the library maintainers, and the fix has been incorporated into CKEditor 5.\n\n### Patches\nThe problem has been recognized and patched. The fix will be available in version `48.5.1` (and above) and `47.7.4` (LTS).\n\n### For more information\nEmail us at [security@cksource.com](mailto:security@cksource.com) if you have any questions or comments about this advisory.","categories":["Libraries & packages"],"product":"ckeditor5","vendor":"ckeditor","ecosystem":"npm","affected_ranges":[{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-rh54-vffm-5fvp","source_modified_at":"2026-10-27T21:05:07Z","fetched_at":"2026-10-27T21:14:11.489891Z","package":{"ecosystem":"npm","name":"ckeditor5"},"range":">= 45.0.0, < 47.7.4"},{"source":"GitHub Advisory Database","source_url":"https://github.com/advisories/GHSA-rh54-vffm-5fvp","source_modified_at":"2026-10-27T21:05:07Z","fetched_at":"2026-10-27T21:14:11.489891Z","package":{"ecosystem":"npm","name":"@ckeditor/ckeditor5-engine"},"range":">= 45.0.0, < 47.7.4"},{"source":"GitHub Advisory 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