UBUNTU-CVE-2021-32808

    Dashboard / Vulnerabilities / UBUNTU-CVE-2021-32808

    UBUNTU-CVE-2021-32808

    Published: 12 Aug 2021Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-32808
    Aliases:
    USN-5340-1

    Summary:

    Details: ckeditor is an open source WYSIWYG HTML editor with rich content support. A vulnerability has been discovered in the clipboard Widget plugin if used alongside the undo feature. The vulnerability allows a user to abuse undo functionality using malformed widget HTML, which could result in executing JavaScript code. It affects all users using the CKEditor 4 plugins listed above at version >= 4.13.0. The problem has been recognized and patched. The fix will be available in version 4.16.2.

    References: https://ubuntu.com/security/CVE-2021-32808, https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-6226-h7ff-ch6c, https://github.com/ckeditor/ckeditor4/releases/tag/4.16.2, https://ubuntu.com/security/notices/USN-5340-1, https://www.cve.org/CVERecord?id=CVE-2021-32808

    Affected packages

    Package

    Name: ckeditor

    Purl: pkg:deb/ubuntu/[email protected]+dfsg-1?arch=source&distro=jammy

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.16.2+dfsg-1

    Affected versions

    4.16.0+dfsg-2

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    UBUNTU-CVE-2021-32808 | CVE-DB