#VU55739 Stored cross-site scripting in Adobe Commerce (formerly Magento Commerce) and Magento Open Source - CVE-2021-36026

Vulnerability identifier: #VU55739

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-36026

CWE-ID: CWE-79

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Adobe Commerce (formerly Magento Commerce)
Web applications / E-Commerce systems
Magento Open Source
Web applications / E-Commerce systems

Vendor: Magento, Inc
Adobe

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. A remote attacker can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Adobe Commerce (formerly Magento Commerce): 2.3.0 - 2.3.7, 2.4.0 - 2.4.2-p1

Magento Open Source: 2.3.0 - 2.3.7, 2.4.2 - 2.4.2-p1

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External links
https://helpx.adobe.com/security/products/magento/apsb21-64.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.