GHSA-42wq-rch8-6f6j

    Dashboard / Vulnerabilities / GHSA-42wq-rch8-6f6j

    GHSA-42wq-rch8-6f6j

    Published: 6 Aug 2022Last Modified: 8 Nov 2023

    Summary: CKEditor5 cross-site scripting vulnerability caused by the editor instance destroying process

    Details: ### Affected packages @ckeditor/ckeditor5-markdown-gfm @ckeditor/ckeditor5-html-support @ckeditor/ckeditor5-html-embed ### Impact A cross-site scripting vulnerability has been discovered affecting three optional CKEditor 5's packages. The vulnerability allowed to trigger a JavaScript code after fulfilling special conditions: a) Using one of the affected packages. In case of `ckeditor5-html-support` and `ckeditor5-html-embed`, additionally, it was required to use a configuration that allows unsafe markup inside the editor, b) Initializing the editor on an element and using an element other than `<textarea>` as a base, c) Destroying the editor instance. The root cause of the issue was a mechanism responsible for updating the source element with the markup coming from the CKEditor 5 data pipeline after destroying the editor. This vulnerability might affect a small percent of integrators that depend on dynamic editor initialization/destroy and use [Markdown](https://ckeditor.com/docs/ckeditor5/latest/features/markdown.html), [General HTML Support](https://ckeditor.com/docs/ckeditor5/latest/features/general-html-support.html) or [HTML embed](https://ckeditor.com/docs/ckeditor5/latest/features/html-embed.html) features. ### Patches The problem has been recognized and patched. The fix will be available in version 35.0.1. ### For more information Email us at [[email protected]](mailto:[email protected]) if you have any questions or comments about this advisory.

    References: https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-42wq-rch8-6f6j, https://nvd.nist.gov/vuln/detail/CVE-2022-31175, https://ckeditor.com/docs/ckeditor5/latest/features/general-html-support.html, https://ckeditor.com/docs/ckeditor5/latest/features/html-embed.html, https://ckeditor.com/docs/ckeditor5/latest/features/markdown.html, https://github.com/ckeditor/ckeditor5

    Affected packages

    Package

    Name: @ckeditor/ckeditor5-markdown-gfm

    Purl: pkg:npm/%40ckeditor/ckeditor5-markdown-gfm

    Affected ranges

    Type: SEMVER

    Events:

    Introduced- 0
    Fixed -35.0.1

    Affected versions

    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
    GHSA-42wq-rch8-6f6j | CVE-DB