CVE-2021-46433

CRITICALNVD 10.010.0—

10.0

In fenom 2.12.1 and before, there is a way in fenom/src/Fenom/Template.php function getTemplateCode()to bypass sandbox to execute arbitrary PHP code when disable_native_funcs is true.

CVSS v3: 10.0
EG Score: 10.0(medium)
EPSS: 58.7%
KEV: Not listed

Published

March 28, 2022

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated May 24, 2026

No patch confirmed yet.

generic

Security Issue · Issue #331 · fenom-template/fenom · GitHub

https://github.com/fenom-template/fenom/issues/331

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
composer	fenom/fenom	—	ghsa

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(1 across 1 ecosystem)

Packagist(1)

Package	Vulnerable range	Fixed in	Dependents
fenom/fenom	1.4.9 ... 2.9.0 (34 versions)	—	—

Data Freshness Timeline

(refreshed 13× in last 7d / 20× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-08 14:15 UTCEPSS rescore
2026-06-08 14:15 UTCEPSS rescore
2026-06-08 14:15 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-06 13:46 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-05 06:09 UTCEPSS rescore
2026-06-04 13:11 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-02 20:11 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore

Frequently asked(5)

What is CVE-2021-46433?

CVE-2021-46433 is a critical vulnerability published on March 28, 2022. In fenom 2.12.1 and before, there is a way in fenom/src/Fenom/Template.php function getTemplateCode()to bypass sandbox to execute arbitrary PHP code when disablenativefuncs is true.

When was CVE-2021-46433 disclosed?

CVE-2021-46433 was first published in the National Vulnerability Database on March 28, 2022, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2021-46433 actively exploited?

CVE-2021-46433 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 58.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2021-46433?

CVE-2021-46433 has a CVSS v3 base score of 10.0 (NVD).

How do I remediate CVE-2021-46433?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2021-46433, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2021-46433

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