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This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
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
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vector strings. CVSS information contributed by other sources is also
displayed.
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OR
*cpe:2.3:a:ckeditor:ckeditor5-engine:*:*:*:*:*:node.js:*:* versions up to (excluding) 27.0.0
*cpe:2.3:a:ckeditor:ckeditor5-font:*:*:*:*:*:node.js:*:* versions up to (excluding) 27.0.0
*cpe:2.3:a:ckeditor:ckeditor5-image:*:*:*:*:*:node.js:*:* versions up to (excluding) 27.0.0
*cpe:2.3:a:ckeditor:ckeditor5-list:*:*:*:*:*:node.js:*:* versions up to (excluding) 27.0.0
*cpe:2.3:a:ckeditor:ckeditor5-markdown-gfm:*:*:*:*:*:node.js:*:* versions up to (excluding) 27.0.0
*
Changed
Reference Type
https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-3rh3-wfr4-76mj No Types Assigned
https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-3rh3-wfr4-76mj Third Party Advisory
Changed
Reference Type
https://www.npmjs.com/package/@ckeditor/ckeditor5-engine No Types Assigned
https://www.npmjs.com/package/@ckeditor/ckeditor5-engine Product, Third Party Advisory
Changed
Reference Type
https://www.npmjs.com/package/@ckeditor/ckeditor5-font No Types Assigned
https://www.npmjs.com/package/@ckeditor/ckeditor5-font Product, Third Party Advisory
Changed
Reference Type
https://www.npmjs.com/package/@ckeditor/ckeditor5-image No Types Assigned
https://www.npmjs.com/package/@ckeditor/ckeditor5-image Product, Third Party Advisory
Changed
Reference Type
https://www.npmjs.com/package/@ckeditor/ckeditor5-list No Types Assigned
https://www.npmjs.com/package/@ckeditor/ckeditor5-list Product, Third Party Advisory
Changed
Reference Type
https://www.npmjs.com/package/@ckeditor/ckeditor5-markdown-gfm No Types Assigned
https://www.npmjs.com/package/@ckeditor/ckeditor5-markdown-gfm Product, Third Party Advisory
Changed
Reference Type
https://www.npmjs.com/package/@ckeditor/ckeditor5-media-embed No Types Assigned
https://www.npmjs.com/package/@ckeditor/ckeditor5-media-embed Product, Third Party Advisory
Changed
Reference Type
https://www.npmjs.com/package/@ckeditor/ckeditor5-paste-from-office No Types Assigned
https://www.npmjs.com/package/@ckeditor/ckeditor5-paste-from-office Product, Third Party Advisory
Changed
Reference Type
https://www.npmjs.com/package/@ckeditor/ckeditor5-widget No Types Assigned
https://www.npmjs.com/package/@ckeditor/ckeditor5-widget Product, Third Party Advisory
Added
CVSS V2 Metadata
Victim must voluntarily interact with attack mechanism
Quick Info
CVE Dictionary Entry: CVE-2021-21391 NVD
Published Date: 04/28/2021 NVD
Last Modified: 11/21/2024
Source: GitHub, Inc.