CVE-2021-33829
Published: 9 June 2021
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.
Priority
Medium
CVSS 3 base score: 6.1
Status
| Package | Release | Status |
|---|---|---|
|
ckeditor Launchpad, Ubuntu, Debian |
bionic |
Released
(4.5.7+dfsg-2ubuntu0.18.04.1)
|
| focal |
Released
(4.12.1+dfsg-1ubuntu0.1)
|
|
| groovy |
Needed
|
|
| hirsute |
Ignored
(reached end-of-life)
|
|
| impish |
Not vulnerable
(4.16.0+dfsg-2)
|
|
| jammy |
Not vulnerable
(4.16.0+dfsg-2)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.16.0+dfsg-2)
|
|
| xenial |
Ignored
(out of standard support)
|
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-33829
- https://ckeditor.com/blog/ckeditor-4.16.1-with-accessibility-enhancements/#improvements-for-comments-in-html-parser
- https://github.com/ckeditor/ckeditor4/commit/3e426ce34f7fc7bf784624358831ef9e189bb6ed
- https://ubuntu.com/security/notices/USN-5340-1
- NVD
- Launchpad
- Debian