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Fencer Intel
critical 9.1

CVE-2021-36042 json

Magento Commerce API File Option Upload Extension Improper Input Validation Vulnerability Could Lead To Remote Code Execution

published 5y ago modified 4mo ago also GHSA-6cwv-wj7v-73xp , EUVD-2021-22675

cvss
9.1
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.5%
EPSS 2.5% chance of exploitation in 30 days, percentile 84%
public exploits
0
none known

Summary

Magento Commerce versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier) and 2.3.7 (and earlier) are affected by an improper input validation vulnerability in the API File Option Upload Extension. An attacker with Admin privileges can achieve unrestricted file upload which can result in remote code execution.

Patch / fix

  • packagist magento/community-edition 2.3.7-p1, 2.4.2-p2

Is CVE-2021-36042 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

2.47% chance of exploitation in the next 30 days, higher than 84% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
NVD 3.1 7.2 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P
GitHub 3.1 9.1 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Affected packages

ecosystem package affected fixed in
packagist magento/project-community-edition
<=2.0.2
 no fix listed
packagist magento/community-edition
1 listed version
>=2.4.2-p1, <2.4.2-p2
<2.3.7-p1
2.4.2-p2
2.3.7-p1

Affected products

  • Adobe Magento Commerce

Classification

Weakness
  • CWE-20 Improper Input Validation
  • CWE-434 Unrestricted Upload of File with Dangerous Type

References

Sources

Fencer Intel 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.