CVE-2026-116687
lowCKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture.
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/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/ckeditor/ckeditor5/commit/4d9c5bb34f63cd956d15ccafbe584e14280c86a0 security-advisories@github.com
- https://github.com/ckeditor/ckeditor5/commit/a750e38635db6a18c5b11599c09f4fd702850423 security-advisories@github.com
- https://github.com/ckeditor/ckeditor5/releases/tag/v47.7.4 security-advisories@github.com
- https://github.com/ckeditor/ckeditor5/releases/tag/v48.5.1 security-advisories@github.com
- https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-v6mg-96c6-gmpq security-advisories@github.com