ckeditor ckeditor CVE-2021-32809 vulnerability in Ckeditor and Other Products
Published on August 12, 2021

Arbitrary HTML injection vulnerability in ckeditor

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ckeditor is an open source WYSIWYG HTML editor with rich content support. A potential vulnerability has been discovered in CKEditor 4 [Clipboard](https://ckeditor.com/cke4/addon/clipboard) package. The vulnerability allowed to abuse paste functionality using malformed HTML, which could result in injecting arbitrary HTML into the editor. It affects all users using the CKEditor 4 plugins listed above at version >= 4.5.2. The problem has been recognized and patched. The fix will be available in version 4.16.2.

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Vulnerability Analysis

CVE-2021-32809 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 small impact on confidentiality and integrity, and no impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
REQUIRED
Scope:
UNCHANGED
Confidentiality Impact:
LOW
Integrity Impact:
LOW
Availability Impact:
NONE

Weakness Type

What is a Code Injection Vulnerability?

The software constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

CVE-2021-32809 has been classified to as a Code Injection vulnerability or weakness.


Products Associated with CVE-2021-32809

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2021-32809 are published in these products:

Ckeditor
 
Fedora Project Fedora
 
Oracle Commerce Guided Search
 
Oracle Commerce Merchandising
 
Oracle Documaker
 
Oracle Jd Edwards Enterpriseone Tools
 
Oracle Application Express
 
Oracle Banking Party Management
 
Oracle Financial Services Analytical Applications Infrastructure
 
Oracle Peoplesoft Enterprise Peopletools
 
Canonical Ubuntu Linux
 

Affected Versions

ckeditor4 Version >= 4.5.2, < 4.16.2 is affected by CVE-2021-32809

Vulnerable Packages

The following package name and versions may be associated with CVE-2021-32809

Package Manager Vulnerable Package Versions Fixed In
npm plugins/clipboard/plugin.js >= 4.5.2, < 4.16.2 4.16.2
composer pimcore/pimcore < 10.1.1 10.1.1

Exploit Probability

EPSS
0.20%
Percentile
42.37%

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.