Magento Commerce Improper Access Control Vulnerability

published 2021-02-11 5 y ago modified 2026-09-08 2 mo ago also BIT-magento-2021-21020 , EUVD-2022-2001 , GHSA-2j6v-829g-885q

cvss: 5.3; version 3.0, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 2.4%; EPSS 2.4% chance of exploitation in 30 days, percentile 84%
public exploits: 0; none known

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.

Patch / fix

fixed in 3

packagist magento/community-edition 2.3.6, 2.4.1-p1
bitnami magento 2.3.6, 2.4.1
magento magento 2.3.6

Exploit prediction

2.44% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.0	5.3	CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
GitHub	3.1	5.3	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
NVD	2.0	4.3	AV:N/AC:M/Au:N/C:N/I:P/A:N
OSV	3.0	5.3	CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N

Affected packages

ecosystem	package	affected	fixed in
packagist	magento/community-edition	<2.3.6 >=2.4.0, <2.4.1-p1	2.3.6 2.4.1-p1
packagist	magento/project-community-edition	<=2.0.2	no fix listed
bitnami	magento	<2.3.6 >=2.4.0, <2.4.1	2.3.6 2.4.1

Affected products

Adobe Magento Commerce

Classification

Weakness

CWE-284 Improper Access Control

References

helpx.adobe.com /security/products/magento/apsb21-08.html
web, vendor-advisory, advisory
nvd.nist.gov /vuln/detail/CVE-2021-21020
advisory, web
github.com /magento/magento2
package

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary