CVE-2020-8251 (GCVE-0-2020-8251)
Vulnerability from cvelistv5 – Published: 2020-09-18 20:11 – Updated: 2025-04-30 22:24
VLAI
EPSS
VEX
Summary
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.
Severity
7.5 (High)
CWE
- CWE-400 - Denial of Service (CWE-400)
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://hackerone.com/reports/868834 | x_refsource_MISC |
| https://nodejs.org/en/blog/vulnerability/septembe… | x_refsource_MISC |
| https://security.netapp.com/advisory/ntap-2020100… | x_refsource_CONFIRM |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
| https://security.gentoo.org/glsa/202101-07 | vendor-advisoryx_refsource_GENTOO |
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| NodeJS | Node |
Affected:
4.0 , < 4.*
(semver)
Affected: 5.0 , < 5.* (semver) Affected: 6.0 , < 6.* (semver) Affected: 7.0 , < 7.* (semver) Affected: 8.0 , < 8.* (semver) Affected: 9.0 , < 9.* (semver) Affected: 11.0 , < 11.* (semver) Affected: 13.0 , < 13.* (semver) Affected: 14.0 , < 14.11.0 (semver) |
guessed |
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-04T09:56:27.982Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://hackerone.com/reports/868834"
},
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://nodejs.org/en/blog/vulnerability/september-2020-security-releases/"
},
{
"tags": [
"x_refsource_CONFIRM",
"x_transferred"
],
"url": "https://security.netapp.com/advisory/ntap-20201009-0004/"
},
{
"name": "FEDORA-2020-43d5a372fc",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/"
},
{
"name": "GLSA-202101-07",
"tags": [
"vendor-advisory",
"x_refsource_GENTOO",
"x_transferred"
],
"url": "https://security.gentoo.org/glsa/202101-07"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Node",
"vendor": "NodeJS",
"versions": [
{
"lessThan": "4.*",
"status": "affected",
"version": "4.0",
"versionType": "semver"
},
{
"lessThan": "5.*",
"status": "affected",
"version": "5.0",
"versionType": "semver"
},
{
"lessThan": "6.*",
"status": "affected",
"version": "6.0",
"versionType": "semver"
},
{
"lessThan": "7.*",
"status": "affected",
"version": "7.0",
"versionType": "semver"
},
{
"lessThan": "8.*",
"status": "affected",
"version": "8.0",
"versionType": "semver"
},
{
"lessThan": "9.*",
"status": "affected",
"version": "9.0",
"versionType": "semver"
},
{
"lessThan": "11.*",
"status": "affected",
"version": "11.0",
"versionType": "semver"
},
{
"lessThan": "13.*",
"status": "affected",
"version": "13.0",
"versionType": "semver"
},
{
"lessThan": "14.11.0",
"status": "affected",
"version": "14.0",
"versionType": "semver"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Node.js \u003c 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."
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-400",
"description": "Denial of Service (CWE-400)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2025-04-30T22:24:26.013Z",
"orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
"shortName": "hackerone"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://hackerone.com/reports/868834"
},
{
"tags": [
"x_refsource_MISC"
],
"url": "https://nodejs.org/en/blog/vulnerability/september-2020-security-releases/"
},
{
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://security.netapp.com/advisory/ntap-20201009-0004/"
},
{
"name": "FEDORA-2020-43d5a372fc",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/"
},
{
"name": "GLSA-202101-07",
"tags": [
"vendor-advisory",
"x_refsource_GENTOO"
],
"url": "https://security.gentoo.org/glsa/202101-07"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "support@hackerone.com",
"ID": "CVE-2020-8251",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "https://github.com/nodejs/node",
"version": {
"version_data": [
{
"version_value": "Fixed in v14.11.0"
}
]
}
}
]
},
"vendor_name": "n/a"
}
]
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "Node.js \u003c 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."
}
]
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "Denial of Service (CWE-400)"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://hackerone.com/reports/868834",
"refsource": "MISC",
"url": "https://hackerone.com/reports/868834"
},
{
"name": "https://nodejs.org/en/blog/vulnerability/september-2020-security-releases/",
"refsource": "MISC",
"url": "https://nodejs.org/en/blog/vulnerability/september-2020-security-releases/"
},
{
"name": "https://security.netapp.com/advisory/ntap-20201009-0004/",
"refsource": "CONFIRM",
"url": "https://security.netapp.com/advisory/ntap-20201009-0004/"
},
{
"name": "FEDORA-2020-43d5a372fc",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/"
},
{
"name": "GLSA-202101-07",
"refsource": "GENTOO",
"url": "https://security.gentoo.org/glsa/202101-07"
}
]
}
}
}
},
"cveMetadata": {
"assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1",
"assignerShortName": "hackerone",
"cveId": "CVE-2020-8251",
"datePublished": "2020-09-18T20:11:43.000Z",
"dateReserved": "2020-01-28T00:00:00.000Z",
"dateUpdated": "2025-04-30T22:24:26.013Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2020-8251",
"date": "2026-09-21",
"epss": "0.08358",
"percentile": "0.94786"
},
"fkie_nvd": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:*",
"matchCriteriaId": "BA70BBF0-BD24-4786-A705-48F26FF4B34B",
"versionEndExcluding": "14.11.0",
"versionStartIncluding": "14.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
"matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Node.js \u003c 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."
},
{
"lang": "es",
"value": "Node.js versiones anteriores a 14.11.0, es vulnerable a ataques de denegaci\u00f3n de servicio (DoS) HTTP basados ??en el env\u00edo de peticiones retrasadas que pueden hacer que el servidor no pueda aceptar nuevas conexiones"
}
],
"id": "CVE-2020-8251",
"lastModified": "2024-11-21T05:38:35.537",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2020-09-18T21:15:13.403",
"references": [
{
"source": "support@hackerone.com",
"tags": [
"Permissions Required"
],
"url": "https://hackerone.com/reports/868834"
},
{
"source": "support@hackerone.com",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/"
},
{
"source": "support@hackerone.com",
"tags": [
"Vendor Advisory"
],
"url": "https://nodejs.org/en/blog/vulnerability/september-2020-security-releases/"
},
{
"source": "support@hackerone.com",
"tags": [
"Third Party Advisory"
],
"url": "https://security.gentoo.org/glsa/202101-07"
},
{
"source": "support@hackerone.com",
"tags": [
"Third Party Advisory"
],
"url": "https://security.netapp.com/advisory/ntap-20201009-0004/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Permissions Required"
],
"url": "https://hackerone.com/reports/868834"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://nodejs.org/en/blog/vulnerability/september-2020-security-releases/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://security.gentoo.org/glsa/202101-07"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://security.netapp.com/advisory/ntap-20201009-0004/"
}
],
"sourceIdentifier": "support@hackerone.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-400"
}
],
"source": "support@hackerone.com",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-400"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"nvd": {
"cve": {
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:nodejs:node.js:*:*:*:*:*:*:*:*",
"matchCriteriaId": "BA70BBF0-BD24-4786-A705-48F26FF4B34B",
"versionEndExcluding": "14.11.0",
"versionStartIncluding": "14.0.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
"matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Node.js \u003c 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."
},
{
"lang": "es",
"value": "Node.js versiones anteriores a 14.11.0, es vulnerable a ataques de denegaci\u00f3n de servicio (DoS) HTTP basados ??en el env\u00edo de peticiones retrasadas que pueden hacer que el servidor no pueda aceptar nuevas conexiones"
}
],
"id": "CVE-2020-8251",
"lastModified": "2024-11-21T05:38:35.537",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 5.0,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 10.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
],
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 3.6,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2020-09-18T21:15:13.403",
"references": [
{
"source": "support@hackerone.com",
"tags": [
"Permissions Required"
],
"url": "https://hackerone.com/reports/868834"
},
{
"source": "support@hackerone.com",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/"
},
{
"source": "support@hackerone.com",
"tags": [
"Vendor Advisory"
],
"url": "https://nodejs.org/en/blog/vulnerability/september-2020-security-releases/"
},
{
"source": "support@hackerone.com",
"tags": [
"Third Party Advisory"
],
"url": "https://security.gentoo.org/glsa/202101-07"
},
{
"source": "support@hackerone.com",
"tags": [
"Third Party Advisory"
],
"url": "https://security.netapp.com/advisory/ntap-20201009-0004/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Permissions Required"
],
"url": "https://hackerone.com/reports/868834"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4OOYAMJVLLCLXDTHW3V5UXNULZBBK4O6/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://nodejs.org/en/blog/vulnerability/september-2020-security-releases/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://security.gentoo.org/glsa/202101-07"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://security.netapp.com/advisory/ntap-20201009-0004/"
}
],
"sourceIdentifier": "support@hackerone.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-400"
}
],
"source": "support@hackerone.com",
"type": "Secondary"
},
{
"description": [
{
"lang": "en",
"value": "CWE-400"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
},
"redhat_vex": {
"aggregate_severity": "Important",
"current_release_date": "2026-06-28T07:40:28+00:00",
"cve": "CVE-2020-8251",
"id": "CVE-2020-8251",
"initial_release_date": "2020-09-15T00:00:00+00:00",
"product_status:known_affected": "1",
"product_status:known_not_affected": "52",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "nodejs: Denial of Service by resource exhaustion CWE-400 due to unfinished HTTP/1.1 requests",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-8251.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2026-08-31T02:27:51Z",
"cve": "CVE-2020-8251",
"id": "CVE-2020-8251",
"initial_release_date": "2023-02-15T04:01:23Z",
"product_status:known_not_affected": "232",
"product_status:recommended": "4",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2020-8251",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2020-8251.json",
"version": "14"
}
}
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…