CVE-2021-21391
Published Apr 29, 2021
Last updated a year ago
Overview
- 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.
- Source
- security-advisories@github.com
- NVD status
- Modified
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 6.5
- Impact score
- 3.6
- Exploitability score
- 2.8
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- Severity
- MEDIUM
CVSS 2.0
- Type
- Primary
- Base score
- 4.3
- Impact score
- 2.9
- Exploitability score
- 8.6
- Vector string
- AV:N/AC:M/Au:N/C:N/I:N/A:P
Weaknesses
- security-advisories@github.com
- CWE-400
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:ckeditor:ckeditor5-engine:*:*:*:*:*:node.js:*:*",
"vulnerable": true,
"matchCriteriaId": "67079ED7-67C7-43E6-B2ED-FC8F38073844",
"versionEndExcluding": "27.0.0"
},
{
"criteria": "cpe:2.3:a:ckeditor:ckeditor5-font:*:*:*:*:*:node.js:*:*",
"vulnerable": true,
"matchCriteriaId": "49A57CEA-AF9A-406B-97E3-0174F98CF961",
"versionEndExcluding": "27.0.0"
},
{
"criteria": "cpe:2.3:a:ckeditor:ckeditor5-image:*:*:*:*:*:node.js:*:*",
"vulnerable": true,
"matchCriteriaId": "8AA7F807-41B2-492E-AC3F-ECC940A9D087",
"versionEndExcluding": "27.0.0"
},
{
"criteria": "cpe:2.3:a:ckeditor:ckeditor5-list:*:*:*:*:*:node.js:*:*",
"vulnerable": true,
"matchCriteriaId": "ECFF8404-52EF-49E0-BB96-5C366362DD9E",
"versionEndExcluding": "27.0.0"
},
{
"criteria": "cpe:2.3:a:ckeditor:ckeditor5-markdown-gfm:*:*:*:*:*:node.js:*:*",
"vulnerable": true,
"matchCriteriaId": "2DDE77C4-ECA2-490F-8B67-D9CC0990FF33",
"versionEndExcluding": "27.0.0"
},
{
"criteria": "cpe:2.3:a:ckeditor:ckeditor5-media-embed:*:*:*:*:*:node.js:*:*",
"vulnerable": true,
"matchCriteriaId": "C9FD93F0-391D-4910-846C-B972D0737066",
"versionEndExcluding": "27.0.0"
},
{
"criteria": "cpe:2.3:a:ckeditor:ckeditor5-paste-from-office:*:*:*:*:*:node.js:*:*",
"vulnerable": true,
"matchCriteriaId": "2B80F6F9-37B6-4FE3-B7C6-07931AD022BD",
"versionEndExcluding": "27.0.0"
},
{
"criteria": "cpe:2.3:a:ckeditor:ckeditor5-widget:*:*:*:*:*:node.js:*:*",
"vulnerable": true,
"matchCriteriaId": "2BD4B908-0A73-4410-813D-34A4108052D0",
"versionEndExcluding": "27.0.0"
}
],
"operator": "OR"
}
]
}
]