CVE-2020-9691 Magento DOM-based Cross-site scripting vulnerability

What is CVE-2020-9691?

CVE-2020-9691 is a critical cross-site scripting vulnerability in Magento Magento, published on 29 Jul 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

Magento versions 2.3.5-p1 and earlier, and 2.3.5-p1 and earlier have a dom-based cross-site scripting vulnerability. Successful exploitation could lead to arbitrary code execution.

Weakness: CWE-79

Which versions are affected by CVE-2020-9691?

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

Products include Magento Magento.

How do I fix CVE-2020-9691?

Upgrade magento/community-edition to 2.3.5-p2 or later.

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-2020-9691 being exploited?

There is no known exploitation of CVE-2020-9691 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 BIT-magento-2020-9691, GHSA-g7pc-799q-743f.