CVE-2021-21391

Published
View on NVD ↗
CVSS v3
6.5
MEDIUM
CVSS v2
4.3
MEDIUM
Affected
9
PROJECTS

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.

@ckeditor/ckeditor5-markdown-gfm
@ckeditor/ckeditor5-markdown-gfm
GitHub Flavored Markdown data processor for CKEditor 5.
NPMNPM
@ckeditor/ckeditor5-engine
@ckeditor/ckeditor5-engine
The editing engine of CKEditor 5 – the best browser-based rich text editor.
NPMNPM
@ckeditor/ckeditor5-image
@ckeditor/ckeditor5-image
Image feature for CKEditor 5.
NPMNPM
@ckeditor/ckeditor5-media-embed
@ckeditor/ckeditor5-media-embed
Media embed feature for CKEditor 5.
NPMNPM
@ckeditor/ckeditor5-list
@ckeditor/ckeditor5-list
Ordered and unordered lists feature to CKEditor 5.
NPMNPM
@ckeditor/ckeditor5-font
@ckeditor/ckeditor5-font
Font feature for CKEditor 5.
NPMNPM
@ckeditor/ckeditor5-paste-from-office
@ckeditor/ckeditor5-paste-from-office
Paste from Office feature for CKEditor 5.
NPMNPM
@ckeditor/ckeditor5-widget
@ckeditor/ckeditor5-widget
Widget API for CKEditor 5.
NPMNPM
ckeditor/ckeditor5
ckeditor/ckeditor5
Powerful rich text editor framework with a modular architecture, modern integrations, and features like collaborative editing.
GitHubGitHub
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