CVE-2021-21020: Magento Improper Access Control

May 24, 2022 (updated February 10, 2025)

Magento versions 2.4.1 (and earlier), 2.4.0-p1 (and earlier) and 2.3.6 (and earlier) are vulnerable to an access control bypass vulnerability in the Login as Customer module. Successful exploitation could lead to unauthorized access to restricted resources.

References

github.com/advisories/GHSA-2j6v-829g-885q
github.com/magento/magento2
helpx.adobe.com/security/products/magento/apsb21-08.html
nvd.nist.gov/vuln/detail/CVE-2021-21020

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