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Fencer Vulns
medium 4.3

CVE-2021-21027 json

Magento Commerce Cross-Site Request Forgery (CSRF) Could Lead To Unauthorized Data Modification

published 2021-02-11 5 y ago modified 2026-09-08 2 mo ago also BIT-magento-2021-21027 , EUVD-2022-4063 , GHSA-h4xc-577p-hgj9

cvss
4.3
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

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.

Patch / fix

  • packagist magento/community-edition 2.3.6-p1, 2.4.2
  • bitnami magento 2.3.6, 2.4.1
  • magento magento 2.3.6

Exploit prediction

1.68% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

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

Affected packages

ecosystem package affected fixed in
packagist magento/community-edition
<2.3.6-p1
>=2.4.0, <2.4.2
2.3.6-p1
2.4.2
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-352 Cross-Site Request Forgery

References

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.