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

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-116687
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-27 20:17:13 UTC
Updated2026-10-28 15:21:31 UTC
DescriptionCKEditor 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.

Risk And Classification

Primary CVSS: v3.1 3.1 LOW from [email protected]

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

Problem Types: CWE-79 | CWE-79 CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary3.1LOWCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED3.1LOWCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Ckeditor Ckeditor5 affected >= 29.0.0, < 47.7.4 Not specified
CNA Ckeditor Ckeditor5 affected >= 48.0.0, < 48.5.1 Not specified

References

ReferenceSourceLinkTags
github.com/ckeditor/ckeditor5/security/advisories/GHSA-v6mg-96c6-gmpq [email protected] github.com
github.com/ckeditor/ckeditor5/commit/4d9c5bb34f63cd956d15ccafbe584e14280... [email protected] github.com
github.com/ckeditor/ckeditor5/releases/tag/v47.7.4 [email protected] github.com
github.com/ckeditor/ckeditor5/releases/tag/v48.5.1 [email protected] github.com
github.com/ckeditor/ckeditor5/commit/a750e38635db6a18c5b11599c09f4fd7028... [email protected] github.com
CVE Program record CVE.ORG www.cve.org canonical
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