CVE-2021-21018: Magento OS Command Injection

critical Affects magento/community-edition. Feed 2026.10.29.4, updated 2026-10-29; published ; advisory modified .

Magento OS Command Injection

Package
magento/community-edition Composer
Affected versions
<2.3.6 or >=2.4.0 and <2.4.1-p1
Fixed in
2.3.6, 2.4.1-p1
Severity
critical  CVSS 9.1
Exploitation
not on CISA KEV · EPSS 4% (90.5th percentile)
Published
2022-05-24
Source
osv.dev

References

CWE-78
NVD recordmagento/community-edition advisories

Am I affected?

Find out in one command. phpwarden checks your composer.lock against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

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# then
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