Vulnerability Description
CKEditor 5 is a JavaScript rich text editor. A cross-site scripting vulnerability has been discovered affecting three optional CKEditor 5's packages in versions prior to 35.0.1. The vulnerability allowed to trigger a JavaScript code after fulfilling special conditions. The affected packages are `@ckeditor/ckeditor5-markdown-gfm`, `@ckeditor/ckeditor5-html-support`, and `@ckeditor/ckeditor5-html-embed`. The specific conditions are 1) 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. 2) Destroying the editor instance and 3) Initializing the editor on an element and using an element other than `<textarea>` as a base. 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, General HTML Support or HTML embed features. The problem has been recognized and patched. The fix is available in version 35.0.1. There are no known workarounds for this issue.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Ckeditor | Ckeditor5-Html-Embed | < 35.0.1 |
| Ckeditor | Ckeditor5-Html-Support | < 35.0.1 |
| Ckeditor | Ckeditor5-Markdown-Gfm | < 35.0.1 |
Related Weaknesses (CWE)
References
- https://ckeditor.com/docs/ckeditor5/latest/features/general-html-support.htmlVendor Advisory
- https://ckeditor.com/docs/ckeditor5/latest/features/html-embed.htmlVendor Advisory
- https://ckeditor.com/docs/ckeditor5/latest/features/markdown.htmlVendor Advisory
- https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-42wq-rch8-6f6jThird Party Advisory
- https://ckeditor.com/docs/ckeditor5/latest/features/general-html-support.htmlVendor Advisory
- https://ckeditor.com/docs/ckeditor5/latest/features/html-embed.htmlVendor Advisory
- https://ckeditor.com/docs/ckeditor5/latest/features/markdown.htmlVendor Advisory
- https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-42wq-rch8-6f6jThird Party Advisory
FAQ
What is CVE-2022-31175?
CVE-2022-31175 is a vulnerability with a CVSS score of 5.8 (MEDIUM). CKEditor 5 is a JavaScript rich text editor. A cross-site scripting vulnerability has been discovered affecting three optional CKEditor 5's packages in versions prior to 35.0.1. The vulnerability allo...
How severe is CVE-2022-31175?
CVE-2022-31175 has been rated MEDIUM with a CVSS base score of 5.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-31175?
Check the references section above for vendor advisories and patch information. Affected products include: Ckeditor Ckeditor5-Html-Embed, Ckeditor Ckeditor5-Html-Support, Ckeditor Ckeditor5-Markdown-Gfm.