CVE-2021-33829

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.

CVSS v3.1 NVD

6.1 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS v2.0 NVD

4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N

EPSS

3.19% chance of exploitation in the next 30 days, 88th percentile

Nuclei

medium · CWE-79

Published

2021-06-09

Updated

2024-08-03

Nuclei templates (1)

• projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-33829.yaml

Security advisories

• https://ckeditor.com/blog/ckeditor-4.16.1-with-accessibility-enhancements/#improvements-f…
• https://lists.debian.org/debian-lts-announce/2021/11/msg00007.html
• https://www.drupal.org/sa-core-2021-003
• advisories/GHSA-rgx6-rjj4-c388

References

• CVE Record
• NVD entry