CVE-2021-41164
HIGH severity · CVSS 8.2 · Cross-site scripting (XSS)
8.2CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionRequired
Confidentiality impactHigh
Integrity impactLow
Availability impactLow
Exploit probability (EPSS)1%
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:L
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: https://github.com/ckeditor/ckeditor4/blob/major/CHANGES.md#ckeditor-417 ↗
Additional information
- NVD record
- https://github.com/ckeditor/ckeditor4/blob/major/CHANGES.md#ckeditor-417Patch
- https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch
- https://www.oracle.com/security-alerts/cpujan2022.htmlPatch
- https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-pvmx-g8h5-cprjAdvisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VR76VBN5GW5QUBJFHVXRX36UZ6YTCMW6/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WOZGMCYDB2OKKULFXZKM6V7JJW4ZZHJP/
- https://www.drupal.org/sa-core-2021-011Advisory
- https://www.oracle.com/security-alerts/cpujul2022.html