CVE-2020-9577 Magento stored cross-site scripting vulnerability

What is CVE-2020-9577?

CVE-2020-9577 is a medium-severity cross-site scripting vulnerability in Magento Magento, published on 26 Jun 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 2.3.4 and earlier, 2.2.11 and earlier (see note), 1.14.4.4 and earlier, and 1.9.4.4 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-2020-9577?

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

Products include Magento Magento.

How do I fix CVE-2020-9577?

Upgrade magento/community-edition to 2.3.4-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-2020-9577 being exploited?

There is no known exploitation of CVE-2020-9577 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-2020-9577, GHSA-689w-2f93-2x67.