CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. Prior to version 47.6.0, a cross-site scripting (XSS) vulnerability has been discovered in the General HTML Support feature. This vulnerability could be triggered by inserting specially crafted markup, leading to unauthorized JavaScript code execution, if the editor instance used an unsafe General HTML Support configuration. This issue has been patched in version 47.6.0.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-jrqm-vmqc-gm93 CKEditor 5 has Cross-site Scripting (XSS) in the HTML Support package
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 06 Mar 2026 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 06 Mar 2026 15:30:00 +0000

Type Values Removed Values Added
First Time appeared Ckeditor
Ckeditor ckeditor5
Vendors & Products Ckeditor
Ckeditor ckeditor5

Thu, 05 Mar 2026 20:00:00 +0000

Type Values Removed Values Added
Description CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. Prior to version 47.6.0, a cross-site scripting (XSS) vulnerability has been discovered in the General HTML Support feature. This vulnerability could be triggered by inserting specially crafted markup, leading to unauthorized JavaScript code execution, if the editor instance used an unsafe General HTML Support configuration. This issue has been patched in version 47.6.0.
Title CKEditor: Cross-site scripting (XSS) in the HTML Support package
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 6.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-03-06T17:56:15.724Z

Reserved: 2026-02-26T18:38:13.889Z

Link: CVE-2026-28343

cve-icon Vulnrichment

Updated: 2026-03-06T17:56:12.556Z

cve-icon NVD

Status : Received

Published: 2026-03-05T20:16:16.017

Modified: 2026-03-05T20:16:16.017

Link: CVE-2026-28343

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-03-06T15:01:12Z

Weaknesses