CVE-2021-37695 – ckeditor4

Package

Manager: npm
Name: ckeditor4
Vulnerable Version: >=0 <4.16.2

Severity

Level: High

CVSS v3.1: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:N

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N

EPSS: 0.00401 pctl0.59963

Details

Fake objects feature vulnerability allowing to execute JavaScript code using malformed HTML. ### Affected packages The vulnerability has been discovered in [Fake Objects](https://ckeditor.com/cke4/addon/fakeobjects) plugin. All plugins with [Fake Objects](https://ckeditor.com/cke4/addon/fakeobjects) plugin dependency are affected: * [Fake Objects](https://ckeditor.com/cke4/addon/fakeobjects) * [Link](https://ckeditor.com/cke4/addon/link) * [Flash](https://ckeditor.com/cke4/addon/flash) * [Iframe](https://ckeditor.com/cke4/addon/iframe) * [Forms](https://ckeditor.com/cke4/addon/forms) * [Page Break](https://ckeditor.com/cke4/addon/pagebreak) ### Impact A potential vulnerability has been discovered in CKEditor 4 [Fake Objects](https://ckeditor.com/cke4/addon/fakeobjects) package. The vulnerability allowed to inject malformed Fake Objects HTML, which could result in executing JavaScript code. It affects all users using the CKEditor 4 plugins listed above at version < 4.16.2. ### Patches The problem has been recognized and patched. The fix will be available in version 4.16.2. ### For more information Email us at security@cksource.com if you have any questions or comments about this advisory. ### Acknowledgements The CKEditor 4 team would like to thank Mika Kulmala ([kulmik](https://github.com/kulmik)) for recognizing and reporting this vulnerability.

Metadata

Created: 2021-08-23T19:42:15Z
Modified: 2022-02-08T21:01:39Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/08/GHSA-m94c-37g6-cjhc/GHSA-m94c-37g6-cjhc.json
CWE IDs: ["CWE-79"]
Alternative ID: GHSA-m94c-37g6-cjhc
Finding: F008
Auto approve: 1