CVE-2019-10794

MEDIUMNVD 6.36.3—

6.3

All versions of component-flatten are vulnerable to Prototype Pollution. The a function could be tricked into adding or modifying properties of Object.prototype using a __proto__ payload.

CVSS v3: 6.3
EG Score: 6.3(medium)
EPSS: 51.2%
KEV: Not listed

Published

February 18, 2020

Last Modified

November 21, 2024

References (2)

report@snykhttps://snyk.io/vuln/SNYK-JS-COMPONENTFLATTEN-548907
af854a3a-2127-422b-91ae-364da2661108https://snyk.io/vuln/SNYK-JS-COMPONENTFLATTEN-548907

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
npm	component-flatten	—	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)

npm(1)

Package	Vulnerable range	Fixed in	Dependents
component-flatten	—	—	—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-74Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection)

Data Freshness Timeline

(refreshed 9× in last 7d / 16× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-02 20:11 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-06-01 13:50 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 22:29 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-31 00:14 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-27 07:32 UTCEG score recompute
2026-05-27 07:32 UTCGHSA enrichment
2026-05-26 13:42 UTCepss_batch
2026-05-26 13:42 UTCepss_batch
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(5)

What is CVE-2019-10794?

CVE-2019-10794 is a medium vulnerability published on February 18, 2020. All versions of component-flatten are vulnerable to Prototype Pollution. The a function could be tricked into adding or modifying properties of Object.prototype using a proto payload.

When was CVE-2019-10794 disclosed?

CVE-2019-10794 was first published in the National Vulnerability Database on February 18, 2020, 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-2019-10794 actively exploited?

CVE-2019-10794 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 51.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2019-10794?

CVE-2019-10794 has a CVSS v3 base score of 6.3 (NVD).

How do I remediate CVE-2019-10794?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2019-10794, 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-2019-10794

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CVE-2019-10794

📅 Published

🔄 Last Modified

🔗 References (2)