4.3

CVSS Score

3.1

-

CVSS Score

Basic Information

CVE ID

CVE-2021-21027

GHSA ID

GHSA-h4xc-577p-hgj9

EPSS Score

0.3594%

CWE

CWE-352

Published

5/24/2022

Updated

2/10/2025

KEV Status

Technology

PHP

Basic Information

CVE ID

GHSA ID

EPSS Score

CWE

Published

Updated

KEV Status

Technology

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CVE-2021-21027

CVE-2021-21027: Magento cross-site request forgery (CSRF) vulnerability via the GraphQL API

Magento versions 2.4.1 (and earlier), 2.4.0-p1 (and earlier) and 2.3.6 (and earlier) are affected by a cross-site request forgery (CSRF) vulnerability via the GraphQL API. Successful exploitation could lead to unauthorized modification of customer metadata by an unauthenticated attacker. Access to the admin console is not required for successful exploitation.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2021-21027

CVE-2021-21027:

4.3

CVSS Score

3.1

-

CVSS Score

Basic Information

CVE ID

CVE-2021-21027

GHSA ID

GHSA-h4xc-577p-hgj9

EPSS Score

0.3594%

CWE

CWE-352

Published

5/24/2022

Updated

2/10/2025

KEV Status

Technology

PHP

Basic Information

CVE ID

GHSA ID

EPSS Score

CWE

Published

Updated

KEV Status

Technology

Technical Details

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
magento/community-edition	composer	< 2.3.6-p1	2.3.6-p1
magento/community-edition	composer	>= 2.4.0, < 2.4.2	2.4.2
magento/project-community-edition	composer	<= 2.0.2

Technical Details

Vulnerability Intelligence
Miggo AI

Root Cause Analysis

The patch modifies the HttpVerbValidator class to correctly validate the HTTP verb for GraphQL requests. The previous implementation was vulnerable to CSRF attacks, and the modified code addresses this vulnerability.

Vulnerable functions

Only Mi**o us*rs **n s** t*is s**tion

WAF Protection Rules

WAF Rule

W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.W** rul*s *v*il**l* *or Mi**o *ustom*rs only.

Reasoning

*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.*v*il**l* *or Mi**o *ustom*rs only.

4.3

-

Basic Information

Basic Information

Concerned about an active attack path?

CVE-2021-21027: Magento cross-site request forgery (CSRF) vulnerability via the GraphQL API

CVE-2021-21027:

4.3

-

Basic Information

Basic Information

Technical Details

Technical Details

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

WAF Protection Rules

WAF Rule

Reasoning

Vulnerability IntelligenceMiggo AI

4.3

4.3

CVE-2021-21027: Magento cross-site request forgery (CSRF) vulnerability via the GraphQL API

Technical Details

Vulnerability IntelligenceMiggo AI

Root Cause Analysis

Vulnerable functions

WAF Protection Rules

WAF Rule

Reasoning

Basic Information

Basic Information

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI

Vulnerability Intelligence
Miggo AI