CVE-2021-46433: Sandbox bypass in fenom

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

Sandbox bypass in fenom

Package
fenom/fenom Composer
Affected versions
<=2.12.1
Fixed in
no fix recorded
Severity
critical  CVSS 10.0
Exploitation
not on CISA KEV · EPSS 1% (66.2th percentile)
Published
2022-03-29
Source
osv.dev

References

NVD recordfenom/fenom 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.

# PHP projects (recommended)
composer require --dev phpwarden/phpwarden
# then
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