CVE-2021-33829
Medium
Description
A cross-site scripting (XSS) vulnerability in the HTML Data Processor in CKEditor 4 4.14.0 through 4.16.x before 4.16.1 allows remote attackers to inject executable JavaScript code through a crafted comment because --!> is mishandled.
SeverityMedium
CVSS6.1
Exploit probability—
Product
Ckeditor
PublishedJun 9, 2021
First seenJun 9, 2021
How to fix
Update
- ckeditor ckeditor4.16.1 or later
- drupal drupal8.9.16, 9.0.14, 9.1.9 or later
- ckeditor44.16.1 or later
- drupal/core7.80, 8.9.16, 9.0.14, 9.1.9 or later
- drupal/drupal7.80, 8.9.16, 9.0.14, 9.1.9 or later
Vendor advisories
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NYA354LJP47KCVJMTUO77ZCX3ZK42G3T/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UVOYN2WKDPLKCNILIGEZM236ABQASLGW/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WAGNWHFIQAVCP537KFFS2A2GDG66J7XD/
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ckeditor ckeditor | 4.14.0 ≤ v < 4.16.1 | 4.16.1 |
| fedoraproject fedora | 33, 34, 35 | — |
| drupal drupal | 8.9.0 ≤ v < 8.9.16, 9.0.0 ≤ v < 9.0.14, 9.1.0 ≤ v < 9.1.9 | 8.9.16, 9.0.14, 9.1.9 |
| debian debian_linux | 9.0 | — |
| ckeditor4npm | 4.14.0 ≤ v < 4.16.1 | 4.16.1 |
| drupal/corePackagist | 7.0.0 ≤ v < 7.80, 8.0.0 ≤ v < 8.9.16, 9.0.0 ≤ v < 9.0.14, 9.1.0 ≤ v < 9.1.9 | 7.80, 8.9.16, 9.0.14, 9.1.9 |
| drupal/drupalPackagist | 7.0.0 ≤ v < 7.80, 8.0.0 ≤ v < 8.9.16, 9.0.0 ≤ v < 9.0.14, 9.1.0 ≤ v < 9.1.9 | 7.80, 8.9.16, 9.0.14, 9.1.9 |
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