Advanced Content Filter (ACF) vulnerability allowing to execute JavaScript code using malformed HTML
CVE-2021-41164

8.2HIGH

Key Information:

Vendor

Ckeditor

Status
Ckeditor4
Vendor
CVE Published:
17 November 2021

What is CVE-2021-41164?

CKEditor4 is an open source WYSIWYG HTML editor. In affected versions a vulnerability has been discovered in the Advanced Content Filter (ACF) module and may affect all plugins used by CKEditor 4. The vulnerability allowed to inject malformed HTML bypassing content sanitization, which could result in executing JavaScript code. It affects all users using the CKEditor 4 at version < 4.17.0. The problem has been recognized and patched. The fix will be available in version 4.17.0.

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Affected Version(s)

ckeditor4 < 4.17.0

References

https://github.com/ckeditor/ckeditor4/security/advisories...
https://github.com/ckeditor/ckeditor4/blob/major/CHANGES....
https://www.oracle.com/security-alerts/cpujan2022.html

CVSS V3.1

Score:
8.2
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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