Low 3.1Published Oct 27, 2026

CVE-2026-116687CKEditor: Cross-site scripting (XSS) in the engine package

Updated under an hour ago (Oct 30, 2026, 5:50 AM ET)

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No exploitation reported and no EPSS estimate yet.

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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.

CVSS: 3.1 LOW (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
Weakness (CWE): CWE-79
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Awaiting Analysis
Record last updated: Oct 27, 2026
First seen by InfoSec Signals: Oct 27, 2026

Affected products

Affected products

ckeditor ckeditor5 ckeditor:ckeditor5 (from the name)	from 29.0.0, < 47.7.4; from 48.0.0, < 48.5.1	CNA record

References

References

https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-v6mg-96c6-gmpq	x-refsource-confirm
https://github.com/ckeditor/ckeditor5/commit/4d9c5bb34f63cd956d15ccafbe584e14280c86a0	x-refsource-misc
https://github.com/ckeditor/ckeditor5/commit/a750e38635db6a18c5b11599c09f4fd702850423	x-refsource-misc
https://github.com/ckeditor/ckeditor5/releases/tag/v47.7.4	x-refsource-misc
https://github.com/ckeditor/ckeditor5/releases/tag/v48.5.1	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.