CVE-2021-41165

Name: CVE-2021-41165
Creator: NVD / NIST
Published: 2021-11-17T20:15:10.273+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 1.47%

Last modified Jun 17, 2026

CVE-2021-41165 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. CKEditor4 is an open source WYSIWYG HTML editor. In affected version a vulnerability has been discovered in the core HTML processing module and may affect all plugins used by CKEditor 4. EPSS estimates a 1.47% chance of exploitation in the next 30 days.

Description

CKEditor4 is an open source WYSIWYG HTML editor. In affected version a vulnerability has been discovered in the core HTML processing module and may affect all plugins used by CKEditor 4. The vulnerability allowed to inject malformed comments 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.

Metrics

CVSS 3.1

5.4/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

EPSS Probability

1.47%

70.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Ckeditor	Ckeditor	< 4.17.0
Drupal	Drupal	>= 8.9.0, < 8.9.20
Drupal	Drupal	>= 9.1.0, < 9.1.14
Drupal	Drupal	>= 9.2.0, < 9.2.9
Oracle	Agile Product Lifecycle Management	9.3.6
Oracle	Application Express	< 22.1
Oracle	Banking Apis	>= 18.1, <= 18.3
Oracle	Banking Apis	19.1
Oracle	Banking Apis	19.2
Oracle	Banking Apis	20.1
Oracle	Banking Apis	21.1
Oracle	Banking Digital Experience	>= 18.1, <= 18.3
Oracle	Banking Digital Experience	19.1
Oracle	Banking Digital Experience	19.2
Oracle	Banking Digital Experience	20.1
Oracle	Banking Digital Experience	21.1
Oracle	Commerce Guided Search	11.3.2
Oracle	Peoplesoft Enterprise Peopletools	8.58
Oracle	Peoplesoft Enterprise Peopletools	8.59
Oracle	Webcenter Portal	12.2.1.3.0
Oracle	Webcenter Portal	12.2.1.4.0

References

https://github.com/ckeditor/ckeditor4/blob/major/CHANGES.md#ckeditor-417Third Party Advisory
https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-7h26-63m7-qhf2Third Party Advisory
https://www.drupal.org/sa-core-2021-011Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.htmlNot Applicable
https://github.com/ckeditor/ckeditor4/blob/major/CHANGES.md#ckeditor-417Third Party Advisory
https://github.com/ckeditor/ckeditor4/security/advisories/GHSA-7h26-63m7-qhf2Third Party Advisory
https://www.drupal.org/sa-core-2021-011Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.htmlPatch, Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.htmlNot Applicable

Timeline

Published: Nov 17, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-41165?

How severe is CVE-2021-41165?

CVE-2021-41165 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 1.47% probability of exploitation in the next 30 days.

How do I fix CVE-2021-41165?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-41165?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST