Magento versions 2.4.2 (and earlier), 2.4.1-p1 (and earlier) and 2.3.6-p1 (and earlier) are affected by an Improper Authorization vulnerability via the 'Create Customer' endpoint. Successful exploitation could lead to unauthorized modification of customer data by an unauthenticated attacker. Access to the admin console is required for successful exploitation.

References

• https://nvd.nist.gov/vuln/detail/CVE-2021-28563
• https://helpx.adobe.com/security/products/magento/apsb21-30.html
• magento/magento2@1bd5cb8
• magento/magento2@ed95272