CVE-2021-21019 Magento Commerce XML Injection Could Lead To Remote Code Execution

What is CVE-2021-21019?

CVE-2021-21019 is a critical vulnerability in Magento Magento, published on 11 Feb 2021. An attacker needs administrator access to exploit it, 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) are vulnerable to XML injection in the Widgets module. Successful exploitation could lead to arbitrary code execution by an authenticated attacker. Access to the admin console is required for successful exploitation.

Weakness: CWE-91

Which versions are affected by CVE-2021-21019?

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

Products include Magento Magento.

How do I fix CVE-2021-21019?

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

Is CVE-2021-21019 being exploited?

There is no known exploitation of CVE-2021-21019 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-2021-21019, GHSA-mw95-gmw4-883p.