CVE-2020-8251

HIGHNVD 7.57.5—

7.5

Node.js < 14.11.0 is vulnerable to HTTP denial of service (DoS) attacks based on delayed requests submission which can make the server unable to accept new connections.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 89.9%
KEV: Not listed

Published

September 18, 2020

Last Modified

November 21, 2024

References (10)

support@hackeronehttps://hackerone.com/reports/868834
support@hackeronehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/
support@hackeronehttps://nodejs.org/en/blog/vulnerability/september-2020-security-releases/
support@hackeronehttps://security.gentoo.org/glsa/202101-07
support@hackeronehttps://security.netapp.com/advisory/ntap-20201009-0004/
af854a3a-2127-422b-91ae-364da2661108https://hackerone.com/reports/868834
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/
af854a3a-2127-422b-91ae-364da2661108https://nodejs.org/en/blog/vulnerability/september-2020-security-releases/
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202101-07
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20201009-0004/

Weakness Classification(1)

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

CWE-400Uncontrolled Resource Consumption (Denial of Service)

Data Freshness Timeline

(refreshed 10× in last 7d / 20× 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.

2026-06-04 13:10 UTCepss_batch
2026-06-04 13:10 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 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 00:15 UTCepss_batch
2026-05-31 00:15 UTCepss_batch
2026-05-29 13:42 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-28 13:43 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
2026-05-27 13:39 UTCepss_batch
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
2026-05-23 07:32 UTCEG score recompute
2026-05-23 07:32 UTCGHSA enrichment

Frequently asked(5)

What is CVE-2020-8251?

CVE-2020-8251 is a high vulnerability published on September 18, 2020. Node.js < 14.11.0 is vulnerable to HTTP denial of service (DoS) attacks based on delayed requests submission which can make the server unable to accept new connections.

When was CVE-2020-8251 disclosed?

CVE-2020-8251 was first published in the National Vulnerability Database on September 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-2020-8251 actively exploited?

CVE-2020-8251 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 89.9% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-8251?

CVE-2020-8251 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2020-8251?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-8251, 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-2020-8251

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Frequently asked(5)

What is CVE-2020-8251?

When was CVE-2020-8251 disclosed?

Is CVE-2020-8251 actively exploited?

What is the CVSS score of CVE-2020-8251?

CVE-2020-8251 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-2020-8251?

CVE-2020-8251

📅 Published

🔄 Last Modified

🔗 References (10)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-8251?

CVE-2020-8251

📅 Published

🔄 Last Modified

🔗 References (10)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-8251?

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References (10)

Frequently asked(5)

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References (10)

Frequently asked(5)

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