CVE-2021-21031 Magento Commerce Failure To Invalidate User Session Could Lead To Unauthorized Access

What is CVE-2021-21031?

CVE-2021-21031 is a medium-severity authentication bypass vulnerability in Magento Magento, published on 11 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Magento versions 2.4.1 (and earlier), 2.4.0-p1 (and earlier) and 2.3.6 (and earlier) do not adequately invalidate user sessions. Successful exploitation could lead to unauthorized access to restricted resources. Access to the admin console is not required for successful exploitation.

Weakness: CWE-613

Which versions are affected by CVE-2021-21031?

7 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-2021-21031?

Upgrade magento/community-edition to a fixed version for your release line: 2.3.6 or 2.4.1-p1.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2021-21031 being exploited?

There is no known exploitation of CVE-2021-21031 in the wild and no public exploit code.

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All Magento Magento vulnerabilities

Sources

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

Also known as BIT-magento-2021-21031, GHSA-4h3p-63x6-vwg2.