CVE-2020-28283

CRITICALCVSS 9.8

9.8

Prototype pollution vulnerability in 'libnested' versions 0.0.0 through 1.5.0 allows an attacker to cause a denial of service and may lead to remote code execution.

CVSS v3: 9.8
EG Score: —
EPSS: —
KEV: Not listed

Published

December 29, 2020

Last Modified

November 21, 2024

References (4)

vulnerabilitylab@mendhttps://github.com/dominictarr/libnested/blob/d028a1b0f2e5f16fc28e568f52b936ae0bca0647/index.js#L27
vulnerabilitylab@mendhttps://www.whitesourcesoftware.com/vulnerability-database/CVE-2020-28284
af854a3a-2127-422b-91ae-364da2661108https://github.com/dominictarr/libnested/blob/d028a1b0f2e5f16fc28e568f52b936ae0bca0647/index.js#L27
af854a3a-2127-422b-91ae-364da2661108https://www.whitesourcesoftware.com/vulnerability-database/CVE-2020-28284

Patch Availability(1)

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

Data Freshness Timeline

(refreshed 6× in last 7d / 6× 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.

2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-26 22:55 UTCEG score recompute
2026-05-26 22:55 UTCGHSA enrichment
2026-05-26 07:17 UTCepss_batch
2026-05-26 07:17 UTCepss_batch

Frequently asked(4)

What is CVE-2020-28283?

CVE-2020-28283 is a critical vulnerability published on December 29, 2020. Prototype pollution vulnerability in 'libnested' versions 0.0.0 through 1.5.0 allows an attacker to cause a denial of service and may lead to remote code execution.

When was CVE-2020-28283 disclosed?

CVE-2020-28283 was first published in the National Vulnerability Database on December 29, 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.

What is the CVSS score of CVE-2020-28283?

CVE-2020-28283 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2020-28283?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-28283, 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-2020-28283

Explore →

Is Your Infrastructure Affected by CVE-2020-28283?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs