High
Security advisory
Keep-alive HTTP and HTTPS connections can remain open and inactive for up to 2 minutes in Node.js 6.16.0 and earlier. Node.js 8.0.0 introduced a dedicated server.keepAliveTimeout which defaults to 5 seconds. The behavior in Node.js 6.16.0 and earlier is a potential Denial of Service (DoS) attack vector. Node.js 6.17.0 introduces server.keepAliveTimeout and the 5-second default.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-5739
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 06:21 UTC · Revision 1
Source evidence
Keep-alive HTTP and HTTPS connections can remain open and inactive for up to 2 minutes in Node.js 6.16.0 and earlier. Node.js 8.0.0 introduced a dedicated server.keepAliveTimeout which defaults to 5 seconds. The behavior in Node.js 6.16.0 and earlier is a potential Denial of Service (DoS) attack vector. Node.js 6.17.0 introduces server.keepAliveTimeout and the 5-second default.
osv:CVE-2019-5739
Complete source record
{
"id": "079eb9c11cc9856b3e06bbc07d5c146dc179c4a447f80d7e6e377214fe37de3e",
"url": "https://osv.dev/vulnerability/CVE-2019-5739",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-5739",
"summary": "Keep-alive HTTP and HTTPS connections can remain open and inactive for up to 2 minutes in Node.js 6.16.0 and earlier. Node.js 8.0.0 introduced a dedicated server.keepAliveTimeout which defaults to 5 seconds. The behavior in Node.js 6.16.0 and earlier is a potential Denial of Service (DoS) attack vector. Node.js 6.17.0 introduces server.keepAliveTimeout and the 5-second default.",
"evidence": "osv:CVE-2019-5739",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2019-5739",
"aliases": [
"CVE-2019-5739"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/nodejs/node",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "a3aa4b41fd1aea4649d16971a52616b4c6c3af37"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:nodejs:node.js:*:*:*:*:lts:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "6.16.0"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v6.16.0",
"v6.15.1",
"v6.15.0",
"v6.14.4",
"v6.14.3",
"v6.14.2",
"v6.14.1",
"v6.14.0",
"v6.13.1",
"v6.13.0",
"v6.12.3",
"v6.12.2",
"v6.12.1",
"v6.12.0",
"v6.11.5",
"v6.11.4",
"v6.11.3",
"v6.11.2",
"v6.11.1",
"v6.11.0",
"v6.10.3",
"v6.10.2",
"v6.10.1",
"v6.10.0",
"v6.9.5",
"v6.9.4",
"v6.9.3",
"v6.9.2",
"v6.9.1",
"v6.9.0",
"v6.8.1",
"v6.8.0",
"v6.7.0",
"v6.6.0",
"v6.5.0",
"v6.4.0",
"v6.3.1",
"v6.3.0",
"v6.2.2",
"v6.2.1",
"v6.2.0",
"v6.1.0",
"v6.0.0",
"v3.0.0",
"v2.5.0",
"v2.4.0",
"v2.3.4",
"v2.3.3",
"v2.3.2",
"v2.3.1",
"v2.3.0",
"v2.2.1",
"v2.2.0",
"v2.1.0",
"v2.0.2",
"v2.0.1",
"v2.0.0",
"v1.7.1",
"v1.7.0",
"v1.6.4",
"v1.6.3",
"v1.6.2",
"v1.6.1",
"v1.6.0",
"v1.5.1",
"v1.5.0",
"v1.4.3",
"v1.4.2",
"v1.4.1",
"v1.3.0",
"v1.2.0",
"v1.1.0",
"v1.0.4",
"v1.0.3",
"v1.0.2-release",
"v1.0.2",
"v1.0.1-release",
"v1.0.1",
"v0.7.3",
"v0.7.2",
"v0.7.0",
"v0.6.1",
"v0.6.0",
"v0.5.10",
"v0.5.9",
"v0.5.8",
"v0.5.7",
"v0.5.6",
"v0.5.5-rc1",
"v0.5.5",
"v0.5.4",
"v0.5.3",
"v0.5.2",
"v0.5.1",
"v0.5.0",
"v0.4.0",
"v0.3.8",
"v0.3.7",
"v0.3.6",
"v0.3.5",
"v0.3.4",
"v0.3.2",
"v0.3.1",
"v0.3.0",
"v0.2.0",
"v0.1.104",
"v0.1.103",
"v0.1.102",
"v0.1.101",
"v0.1.100",
"v0.1.99",
"v0.1.98",
"v0.1.97",
"v0.1.96",
"v0.1.95",
"v0.1.94",
"v0.1.93",
"v0.1.92",
"v0.1.33",
"v0.1.32",
"v0.1.31",
"v0.1.30",
"v0.1.29",
"v0.1.28",
"v0.1.27",
"v0.1.26",
"v0.1.25",
"v0.1.24",
"v0.1.23",
"v0.1.22",
"v0.1.21",
"v0.1.20",
"v0.1.19",
"v0.1.18",
"v0.1.17",
"v0.1.16",
"v0.1.15",
"v0.1.14",
"v0.1.13",
"v0.1.12",
"v0.1.11",
"v0.1.10",
"v0.1.9",
"v0.1.8",
"v0.1.7",
"v0.1.6",
"v0.1.5",
"v0.1.4",
"v0.1.3",
"v0.1.2",
"v0.1.1",
"v0.1.0",
"v0.0.6",
"v0.0.4",
"v0.0.3",
"v0.0.2",
"v0.0.1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-5739.json"
}
}
],
"modified": "2026-10-24T10:30:38.376901192Z",
"provider": "osv",
"references": [
"https://nodejs.org/en/blog/vulnerability/february-2019-security-releases/",
"https://security.gentoo.org/glsa/202003-48",
"https://security.netapp.com/advisory/ntap-20190502-0008/"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*"
],
"vendor_product": "opensuse:leap",
"extracted_events": [
{
"range": [
{
"introduced": "42.3"
},
{
"last_affected": "42.3"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2019-5739",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 434437,
"published_at": "2019-03-28T17:29:01.647+00:00"
}