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CVE-2021-21391 Detail

Description

CKEditor 5 provides a WYSIWYG editing solution. This CVE affects the following npm packages: ckeditor5-engine, ckeditor5-font, ckeditor5-image, ckeditor5-list, ckeditor5-markdown-gfm, ckeditor5-media-embed, ckeditor5-paste-from-office, and ckeditor5-widget. Following an internal audit, a regular expression denial of service (ReDoS) vulnerability has been discovered in multiple CKEditor 5 packages. The vulnerability allowed to abuse particular regular expressions, which could cause a significant performance drop resulting in a browser tab freeze. It affects all users using the CKEditor 5 packages listed above at version <= 26.0.0. The problem has been recognized and patched. The fix will be available in version 27.0.0.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-3rh3-wfr4-76mj Third Party Advisory 
https://www.npmjs.com/package/%40ckeditor/ckeditor5-engine
https://www.npmjs.com/package/%40ckeditor/ckeditor5-font
https://www.npmjs.com/package/%40ckeditor/ckeditor5-image
https://www.npmjs.com/package/%40ckeditor/ckeditor5-list
https://www.npmjs.com/package/%40ckeditor/ckeditor5-markdown-gfm
https://www.npmjs.com/package/%40ckeditor/ckeditor5-media-embed
https://www.npmjs.com/package/%40ckeditor/ckeditor5-paste-from-office
https://www.npmjs.com/package/%40ckeditor/ckeditor5-widget

Weakness Enumeration

CWE-ID CWE Name Source
CWE-400 Uncontrolled Resource Consumption GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Denotes Vulnerable Software
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Change History

3 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-21391
NVD Published Date:
04/28/2021
NVD Last Modified:
11/06/2023
Source:
GitHub, Inc.