CVE-2020-3758 Magento stored cross-site scripting vulnerability

What is CVE-2020-3758?

CVE-2020-3758 is a medium-severity cross-site scripting vulnerability in Magento Magento, published on 29 Jan 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 2.3.3 and earlier, 2.2.10 and earlier, 1.14.4.3 and earlier, and 1.9.4.3 and earlier have a stored cross-site scripting vulnerability. Successful exploitation could lead to sensitive information disclosure.

Weakness: CWE-79

Which versions are affected by CVE-2020-3758?

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

Products include Magento Magento.

How do I fix CVE-2020-3758?

Upgrade magento/community-edition to a fixed version for your release line: 2.2.11 or 2.3.4.

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-2020-3758 being exploited?

There is no known exploitation of CVE-2020-3758 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-2020-3758, GHSA-p5q3-xg47-653m.