CKEditor4 is an open source what-you-see-is-what-you-get HTML editor. A cross-site scripting vulnerability has been discovered in the core HTML parsing module in versions of CKEditor4 prior to 4.24.0-lts. It may affect all editor instances that enabled full-page editing mode or enabled CDATA elements in Advanced Content Filtering configuration (defaults to `script` and `style` elements). The vulnerability allows attackers to inject malformed HTML content bypassing Advanced Content Filtering mechanism, which could result in executing JavaScript code. An attacker could abuse faulty CDATA content detection and use it to prepare an intentional attack on the editor. A fix is available in version 4.24.0-lts.

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 24.10 host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-7258-1 advisory.

    Kevin Backhouse discovered that CKEditor did not properly sanitize HTML content. An attacker could     possibly use this issue to perform cross site scripting and obtain sensitive information. This issue only     affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS and Ubuntu 22.04 LTS. (CVE-2022-24728)

    It was discovered that CKEditor did not properly handle the creation of editor instances in the Iframe     Dialog and Media Embed packages. An attacker could possibly use this issue to perform cross site scripting     and obtain sensitive information. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, Ubuntu     20.04 LTS and Ubuntu 22.04 LTS. (CVE-2023-28439)

    It was discovered that CKEditor did not properly handle parsing HTML content. An attacker could possibly     use this issue to perform cross site scripting and obtain sensitive information. (CVE-2024-24815,     CVE-2024-24816)

    It was discovered that CKEditor did not properly sanitize version notifications. An attacker could     possibly use this issue to perform cross site scripting and obtain sensitive information. This issue only     affected Ubuntu 24.04 LTS and Ubuntu 24.10. (CVE-2024-43411)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 15 host has a package installed that is affected by a vulnerability as referenced in the openSUSE- SU-2025:0008-1 advisory.

    - Update to 6.7.2
      * Deprecated the package.
      * Added a new ckeditor/fixups.js script which disables the version check again         (if something slips through by accident) and which disables the behavior         where CKEditor 4 would automatically attach itself to unrelated HTML elements         with a contenteditable attribute (see CKEDITOR.disableAutoInline in the         CKEditor 4 docs).
    - CVE-2024-24815: Fixed bypass of Advanced Content Filtering mechanism (boo#1219720)

    - update to 6.7.1:
      * Add Python 3.12, Django 5.0
      * Silence the CKEditor version check/nag but include a system check warning

    - update to 6.7.0:
      * Dark mode fixes.
      * Added support for Pillow 10.

    - update to 6.6.1:
      * Required a newer version of django-js-asset which actually works         with Django 4.1.
      * CKEditor 4.21.0
      * Fixed the CKEditor styles when used with the dark Django admin theme.

    - update to 6.5.1:
      * Avoided calling ``static()`` if ``CKEDITOR_BASEPATH`` is defined.
      * Fixed ``./manage.py generateckeditorthumbnails`` to work again after the         image uploader backend rework.
      * CKEditor 4.19.1
      * Stopped calling ``static()`` during application startup.
      * Added Django 4.1
      * Changed the context for the widget to deviate less from Django. Removed a
      * few template variables which are not used in the bundled
      * ``ckeditor/widget.html`` template. This only affects you if you are using a
      * customized widget or widget template.
      * Dropped support for Python < 3.8, Django < 3.2.
      * Added a pre-commit configuration.
      * Added a GitHub action for running tests.
      * Made selenium tests require opt in using a ``SELENIUM=firefox`` or         ``SELENIUM=chromium`` environment variable.
      * Made it possible to override the CKEditor template in the widget class.
      * Changed ``CKEDITOR_IMAGE_BACKEND`` to require dotted module paths (the old         identifiers are still supported for now).

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

According to its self-reported version number, the CKEditor application running on the remote host is prior to 4.24.0-LTS. It is, therefore, affected by multiples Cross-Site-Scripting :

- In samples that are shipped with production code. The vulnerability allowed to execute JavaScript code by abusing the misconfigured preview feature. - In samples that are shipped with production code. The vulnerability allowed to execute JavaScript code by abusing the AJAX sample. - Through processing core module. The vulnerability allowed to inject malformed HTML content bypassing Advanced Content Filtering mechanism, which could result in executing JavaScript code.

Note that the scanner has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of CKEditor included on the remote web host is 4.x prior to 4.24.0-lts. It may, therefore, be affected by multiple cross-site scripting (XSS) vulnerabilities.

 - A cross-site scripting vulnerability affecting editor instances that enabled full-page editing mode or    enabled CDATA elements in Advanced Content Filtering configuration (defaults to `script` and `style`    elements). The vulnerability allows attackers to inject malformed HTML content bypassing Advanced    Content Filtering mechanism, which could result in executing JavaScript code. An attacker could abuse    faulty CDATA content detection and use it to prepare an intentional attack on the editor. (CVE-2024-24815)

 - A cross-site scripting vulnerability in samples that use the `preview` feature. All integrators that use    these samples in the production code can be affected. The vulnerability allows an attacker to execute    JavaScript code by abusing the misconfigured preview feature. (CVE-2024-24816)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
215049	Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 24.10 : CKEditor vulnerabilities (USN-7258-1)	Nessus	Ubuntu Local Security Checks	medium
213541	openSUSE 15 Security Update : python-django-ckeditor (openSUSE-SU-2025:0008-1)	Nessus	SuSE Local Security Checks	medium
114426	CKEditor < 4.24.0-LTS Multiples Cross-Site Scripting	Web App Scanning	Component Vulnerability	medium
190347	CKEditor 4.x < 4.24.0-lts Multitple XSS	Nessus	CGI abuses : XSS	medium

Detections

Analytics

CVE-2024-24815

medium

Tenable Plugins

medium

medium

medium

medium