UBUNTU-CVE-2021-32809

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    UBUNTU-CVE-2021-32809

    Published: 12 Aug 2021Last Modified: 4 Feb 2026
    Upstream:
    CVE-2021-32809

    Summary:

    Details: ckeditor is an open source WYSIWYG HTML editor with rich content support. A potential vulnerability has been discovered in CKEditor 4 [Clipboard](https://ckeditor.com/cke4/addon/clipboard) package. The vulnerability allowed to abuse paste functionality using malformed HTML, which could result in injecting arbitrary HTML into the editor. It affects all users using the CKEditor 4 plugins listed above at version >= 4.5.2. The problem has been recognized and patched. The fix will be available in version 4.16.2.

    References: https://ubuntu.com/security/CVE-2021-32809, https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-7889-rm5j-hpgg, https://ubuntu.com/security/notices/USN-5340-1, https://www.cve.org/CVERecord?id=CVE-2021-32809, https://ubuntu.com/security/notices/USN-5340-2

    Affected packages

    Package

    Name: ckeditor

    Purl: pkg:deb/ubuntu/[email protected]+dfsg-2ubuntu0.16.04.1~esm1?arch=source&distro=esm-apps/xenial

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -4.5.7+dfsg-2ubuntu0.16.04.1~esm1

    Affected versions

    4.4.4+dfsg1-3

    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