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.
Published: 2021-04-29
Score: 6.5 Medium
EPSS: 8.3% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2021-0749 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.
Github GHSA Github GHSA GHSA-3rh3-wfr4-76mj Regular expression Denial of Service in multiple packages
History

No history.

Subscriptions

Ckeditor Ckeditor5-engine Ckeditor5-font Ckeditor5-image Ckeditor5-list Ckeditor5-markdown-gfm Ckeditor5-media-embed Ckeditor5-paste-from-office Ckeditor5-widget
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2024-08-03T18:09:15.938Z

Reserved: 2020-12-22T00:00:00.000Z

Link: CVE-2021-21391

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-04-29T01:15:07.883

Modified: 2024-11-21T05:48:15.750

Link: CVE-2021-21391

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses