Vulnerability Details : CVE-2022-31175
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.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2022-31175
- cpe:2.3:a:ckeditor:ckeditor5-markdown-gfm:*:*:*:*:*:node.js:*:*
- cpe:2.3:a:ckeditor:ckeditor5-html-support:*:*:*:*:*:node.js:*:*
- cpe:2.3:a:ckeditor:ckeditor5-html-embed:*:*:*:*:*:node.js:*:*
Exploit prediction scoring system (EPSS) score for CVE-2022-31175
0.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 38 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2022-31175
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
4.7
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N |
1.6
|
2.7
|
NIST | |
5.8
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L |
1.6
|
3.7
|
GitHub, Inc. |
CWE ids for CVE-2022-31175
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The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by: security-advisories@github.com (Primary)
References for CVE-2022-31175
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https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-42wq-rch8-6f6j
Cross-site scripting (XSS) caused by the editor instance destroying process · Advisory · ckeditor/ckeditor5 · GitHubThird Party Advisory
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https://ckeditor.com/docs/ckeditor5/latest/features/general-html-support.html
General HTML Support - CKEditor 5 DocumentationVendor Advisory
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https://ckeditor.com/docs/ckeditor5/latest/features/html-embed.html
HTML embed - CKEditor 5 DocumentationVendor Advisory
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https://ckeditor.com/docs/ckeditor5/latest/features/markdown.html
Markdown output - CKEditor 5 DocumentationVendor Advisory
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