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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-2026-116687

Published

CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. From 29.0.0 until 47.7.4 and 48.5.1, specially crafted markup can trigger cross-site scripting when General HTML Support is enabled and specifically configured to allow object content. Processing that content can execute attacker-controlled JavaScript in a browser context isolated from the origin of the application embedding the editor. This issue is fixed in versions 47.7.4 and 48.5.1.

Source published
27 Oct 2026 19:33:11 UTC
Source modified
27 Oct 2026 19:33:11 UTC
Observed here
27 Oct 2026 20:45:55 UTC
Source terms
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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · 3.1 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N

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Sources read 31 Oct 06:34 UTC · 272 of 272 readable · 270 fully read · documentation 469/469 current