6.5

CVE-2021-21391

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.

Data is provided by the National Vulnerability Database (NVD)
Ckeditor ≫ Ckeditor5-engine SwPlatformnode.js Version < 27.0.0
Ckeditor ≫ Ckeditor5-font SwPlatformnode.js Version < 27.0.0
Ckeditor ≫ Ckeditor5-image SwPlatformnode.js Version < 27.0.0
Ckeditor ≫ Ckeditor5-list SwPlatformnode.js Version < 27.0.0
Ckeditor ≫ Ckeditor5-markdown-gfm SwPlatformnode.js Version < 27.0.0
Ckeditor ≫ Ckeditor5-media-embed SwPlatformnode.js Version < 27.0.0
Ckeditor ≫ Ckeditor5-paste-from-office SwPlatformnode.js Version < 27.0.0
Ckeditor ≫ Ckeditor5-widget SwPlatformnode.js Version < 27.0.0
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Type Source Score Percentile
EPSS FIRST.org 8.3% 0.919
CVSS Metriken
Source Base Score Exploit Score Impact Score Vector string
nvd@nist.gov 6.5 2.8 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
nvd@nist.gov 4.3 8.6 2.9
AV:N/AC:M/Au:N/C:N/I:N/A:P
security-advisories@github.com 6.5 2.8 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CWE-400 Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.