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CVE-2021-21391
Detail
Modified
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.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: The NVD and the CNA have provided the same score. When this occurs only the CNA information is displayed, but the Acceptance Level icon for the CNA is given a checkmark to signify NVD concurrence.
NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.
Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.
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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
*
Added
CVSS V2
NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P)
Added
CVSS V2 Metadata
Victim must voluntarily interact with attack mechanism
Added
CVSS V3.1
NIST AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
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
Quick Info
CVE Dictionary Entry: CVE-2021-21391 NVD
Published Date: 04/28/2021 NVD
Last Modified: 11/06/2023
Source: GitHub, Inc.