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Servers and applications

CVE-2021-21020

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.

Severity
Medium 5.3
Published
11 Feb 2021
Last changed
17 Jun 2026
Added to UpHeron
21 Oct 2026
Fixed in
2.3.6
Sources
NVD

Affected software

SoftwareAffected versions
Magento / Adobe CommerceServers and applications · cpe:a:magento:magento
  • Every version before 2.3.6
  • Version 2.3.6
  • Version 2.4.0
  • Version 2.4.0-p1
  • Version 2.4.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-21020
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-21020