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NVD Vulnerability Details :
CVE-2026-28343
Modified
More InfoOfficial Page
Source-security-advisories@github.com
View Known Exploited Vulnerability (KEV) details
Published At-05 Mar, 2026 | 20:16
Updated At-19 Mar, 2026 | 19:16

CKEditor 5 is a modern JavaScript rich-text editor with an MVC architecture. Starting in version 29.0.0 and 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.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.16.4MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Primary3.16.1MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Type: Secondary
Version: 3.1
Base score: 6.4
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Type: Primary
Version: 3.1
Base score: 6.1
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CPE Matches
ckeditor
ckeditor
>>ckeditor5>>Versions before 47.6.0(exclusive)
cpe:2.3:a:ckeditor:ckeditor5:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-79Secondarysecurity-advisories@github.com
CWE ID: CWE-79
Type: Secondary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/ckeditor/ckeditor5/releases/tag/v29.0.0security-advisories@github.com
N/A
https://github.com/ckeditor/ckeditor5/releases/tag/v47.6.0security-advisories@github.com
Release Notes
https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-jrqm-vmqc-gm93security-advisories@github.com
Mitigation
Vendor Advisory
Hyperlink: https://github.com/ckeditor/ckeditor5/releases/tag/v29.0.0
Source: security-advisories@github.com
Resource: N/A
Hyperlink: https://github.com/ckeditor/ckeditor5/releases/tag/v47.6.0
Source: security-advisories@github.com
Resource:
Release Notes
Hyperlink: https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-jrqm-vmqc-gm93
Source: security-advisories@github.com
Resource:
Mitigation
Vendor Advisory
Change History
0Changes found
Details not found