Bug 2444907 (CVE-2026-28343) - CVE-2026-28343 ckeditor: CKEditor: Unauthorized JavaScript code execution via specially crafted markup in General HTML Support
Summary: CVE-2026-28343 ckeditor: CKEditor: Unauthorized JavaScript code execution via...
Keywords:
Status: NEW
Alias: CVE-2026-28343
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2444955
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-05 20:01 UTC by OSIDB Bzimport
Modified: 2026-03-05 20:57 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-03-05 20:01:53 UTC 
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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