CKEditor: Cross-site scripting (XSS) in the engine package
Exact source revision recorded 27 Oct 2026 20:45:55 UTC. It does not establish the source's current position. Latest evidence.
cve-program · CVE-2026-116688
PublishedCKEditor 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.
- Source published
- 27 Oct 2026 19:36:28 UTC
- Source modified
- 27 Oct 2026 19:36:28 UTC
- Observed here
- 27 Oct 2026 20:45:55 UTC
- Source terms
- CVE Program Terms of Use
Original source record · Cite this exact observation · Complete original publisher JSON
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CVSS 3.1 · 8.1 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N