What is CVE-2021-21030?

CVE-2021-21030 is a stored cross-site scripting (XSS) vulnerability in Magento versions 2.4.1 (and earlier), 2.4.0-p1 (and earlier), and 2.3.6 (and earlier).

How does the vulnerability CVE-2021-21030 impact Magento?

The vulnerability CVE-2021-21030 allows an attacker to execute arbitrary JavaScript code in the victim's browser through the customer address upload feature.

How can an attacker exploit the vulnerability CVE-2021-21030?

An attacker can exploit the vulnerability CVE-2021-21030 by uploading a malicious customer address file that contains JavaScript code.

What is the severity of CVE-2021-21030?

The severity of CVE-2021-21030 is high with a CVSS score of 8.1.

How can I fix the vulnerability CVE-2021-21030 in my Magento installation?

To fix the vulnerability CVE-2021-21030, you should update your Magento installation to the latest version available, which includes the necessary security patches.

Vulnerability/
CVE-2021-21030

high

8.1

CWE

11/2/2021

16/9/2024

CVE-2021-21030: Magento Commerce Stored Cross-site Scripting Could Lead To Arbitrary Javascript Execution

First published: Thu Feb 11 2021(Updated: )

Magento versions 2.4.1 (and earlier), 2.4.0-p1 (and earlier) and 2.3.6 (and earlier) are vulnerable to a stored cross-site scripting (XSS) in the customer address upload feature. Successful exploitation could lead to arbitrary JavaScript execution in the victim's browser. Exploitation of this issue requires user interaction.

Credit: psirt@adobe.com

Affected Software	Affected Version	How to fix
Magento Magento	<2.3.6
Magento Magento	<2.3.6
Magento Magento	=2.3.6
Magento Magento	=2.3.6
Magento Magento	=2.4.0
Magento Magento	=2.4.0
Magento Magento	=2.4.0-p1
Magento Magento	=2.4.0-p1
Magento Magento	=2.4.1
Magento Magento	=2.4.1

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Reference Links

https://helpx.adobe.com/security/products/magento/apsb21-08.html

Frequently Asked Questions

What is CVE-2021-21030?
CVE-2021-21030 is a stored cross-site scripting (XSS) vulnerability in Magento versions 2.4.1 (and earlier), 2.4.0-p1 (and earlier), and 2.3.6 (and earlier).
How does the vulnerability CVE-2021-21030 impact Magento?
The vulnerability CVE-2021-21030 allows an attacker to execute arbitrary JavaScript code in the victim's browser through the customer address upload feature.
How can an attacker exploit the vulnerability CVE-2021-21030?
An attacker can exploit the vulnerability CVE-2021-21030 by uploading a malicious customer address file that contains JavaScript code.
What is the severity of CVE-2021-21030?
The severity of CVE-2021-21030 is high with a CVSS score of 8.1.
How can I fix the vulnerability CVE-2021-21030 in my Magento installation?
To fix the vulnerability CVE-2021-21030, you should update your Magento installation to the latest version available, which includes the necessary security patches.

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vendor/magento
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version/magento magento/2.3.6
version/magento magento/2.4.0
version/magento magento/2.4.0-p1
version/magento magento/2.4.1

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