CVE-2019-8120 Magento 2 Community Edition XSS Vulnerability

What is CVE-2019-8120?

CVE-2019-8120 is a medium-severity cross-site scripting vulnerability in Magento Magento, published on 5 Nov 2019. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

A stored cross-site scripting (XSS) vulnerability exists in Magento 2.1 prior to 2.1.19, Magento 2.2 prior to 2.2.10, Magento 2.3 prior to 2.3.3. An authenticated user can inject arbitrary Javascript code by manipulating section of a POST request related to customer's email address.

Weakness: CWE-79

Which versions are affected by CVE-2019-8120?

6 open source packages ship an affected version, including magento/community-edition. It affects 1 product.

Products include Magento Magento.

How do I fix CVE-2019-8120?

Upgrade magento/community-edition to a fixed version for your release line: 2.1.19, 2.2.10 or 2.3.3.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2019-8120 being exploited?

There is no known exploitation of CVE-2019-8120 in the wild and no public exploit code.

Other vulnerabilities in Magento Magento

• CVE-2020-9664 Magento php object injection vulnerability Critical 9.8
• CVE-2020-9576 Magento command injection vulnerability Critical 9.8
• CVE-2020-9578 Magento command injection vulnerability Critical 9.8
• CVE-2020-9579 Magento Security mitigation bypass vulnerability Critical 9.8
• CVE-2020-9580 Magento Security mitigation bypass vulnerability Critical 9.8

All Magento Magento vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-985w-mqqp-7287.