CVE-2020-28274

CRITICALNVD 9.89.8—

9.8

Prototype pollution vulnerability in 'deepref' versions 1.1.1 through 1.2.1 allows attacker to cause a denial of service and may lead to remote code execution.

CVSS v3: 9.8
EG Score: 9.8(medium)
EPSS: 83.1%
KEV: Not listed

Published

December 8, 2020

Last Modified

November 21, 2024

References (2)

vulnerabilitylab@mendhttps://www.whitesourcesoftware.com/vulnerability-database/CVE-2020-28274%2Chttps://github.com/isaymatato/deepref/commit/24935e6a1060cb09c641d3075982f0b44cfca4c2
af854a3a-2127-422b-91ae-364da2661108https://www.whitesourcesoftware.com/vulnerability-database/CVE-2020-28274%2Chttps://github.com/isaymatato/deepref/commit/24935e6a1060cb09c641d3075982f0b44cfca4c2

Patch Availability(1)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
npm	deepref	—	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
deepref	—	—	—

Data Freshness Timeline

(refreshed 10× 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
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-07 15:23 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 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
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-31 00:15 UTCEPSS rescore
2026-05-29 13:42 UTCEPSS rescore
2026-05-28 13:43 UTCEPSS rescore
2026-05-28 13:43 UTCEPSS rescore

Frequently asked(5)

What is CVE-2020-28274?

CVE-2020-28274 is a critical vulnerability published on December 8, 2020. Prototype pollution vulnerability in 'deepref' versions 1.1.1 through 1.2.1 allows attacker to cause a denial of service and may lead to remote code execution.

When was CVE-2020-28274 disclosed?

CVE-2020-28274 was first published in the National Vulnerability Database on December 8, 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-2020-28274 actively exploited?

CVE-2020-28274 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 83.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-28274?

CVE-2020-28274 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2020-28274?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-28274, 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-2020-28274

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