ckeditor ckeditor CVE-2021-41165 vulnerability in Ckeditor and Other Products
Published on November 17, 2021

HTML comments vulnerability allowing to execute JavaScript code

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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.

Github Repository NVD

Vulnerability Analysis

CVE-2021-41165 can be exploited with network access, requires user interaction and a small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
REQUIRED
Scope:
CHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
LOW
Availability Impact:
LOW

Weakness Type

What is a XSS Vulnerability?

The software 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.

CVE-2021-41165 has been classified to as a XSS vulnerability or weakness.


Products Associated with CVE-2021-41165

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2021-41165 are published in these products:

Ckeditor
 
Drupal
 
Oracle Banking Apis
 
Oracle Banking Digital Experience
 
Oracle Webcenter Portal
 
Oracle Agile Product Lifecycle Management
 
Oracle Peoplesoft Enterprise Peopletools
 
Oracle Commerce Guided Search
 
Oracle Application Express
 

Affected Versions

ckeditor4 Version < 4.17.0 is affected by CVE-2021-41165

Vulnerable Packages

The following package name and versions may be associated with CVE-2021-41165

Package Manager Vulnerable Package Versions Fixed In
npm ckeditor4 < 4.17.0 4.17.0

Exploit Probability

EPSS
0.12%
Percentile
30.59%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.