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CVE-2021-33829: Cross-site Scripting

June 9, 2021 (updated November 7, 2023)

A cross-site scripting (XSS) vulnerability in the HTML Data Processor in CKEditor 4 allows remote attackers to inject executable JavaScript code through a crafted comment.

References

  • nvd.nist.gov/vuln/detail/CVE-2021-33829

Code Behaviors & Features

Detect and mitigate CVE-2021-33829 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →

Affected versions

All versions starting from 4.14.0 before 4.16.1

Fixed versions

  • 4.16.1

Solution

Upgrade to version 4.16.1 or above.

Impact 6.1 MEDIUM

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

Learn more about CVSS

Weakness

  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Source file

npm/ckeditor4/CVE-2021-33829.yml

Spotted a mistake? Edit the file on GitLab.

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