High
Security advisory
Fastify node module before 0.38.0 is vulnerable to a denial-of-service attack by sending a request with "Content-Type: application/json" and a very large payload.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-3711
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 10:30 UTC · Revision 1
Source evidence
Fastify node module before 0.38.0 is vulnerable to a denial-of-service attack by sending a request with "Content-Type: application/json" and a very large payload.
osv:CVE-2018-3711
Complete source record
{
"id": "539d249e93725c237fb87df0ec7042a91a131ea0892c3cfafcfb35120eb7bd49",
"url": "https://osv.dev/vulnerability/CVE-2018-3711",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-3711",
"summary": "Fastify node module before 0.38.0 is vulnerable to a denial-of-service attack by sending a request with \"Content-Type: application/json\" and a very large payload.",
"evidence": "osv:CVE-2018-3711",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2018-3711",
"aliases": [
"CVE-2018-3711",
"GHSA-mq6c-fh97-4gwv"
],
"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/fastify/fastify",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "629c16c9c9d09109a264f8868f7f0844907bb5a3"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:fastify:fastify:*:*:*:*:*:node.js:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "0.38.0"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v0.37.0",
"v0.36.0",
"v0.35.7",
"v0.35.6",
"v0.35.5",
"v0.35.4",
"v0.35.3",
"v0.35.2",
"v0.35.1",
"v0.35.0",
"v0.34.0",
"v0.33.0",
"v0.32.0",
"v0.31.0",
"v0.30.3",
"v0.30.1",
"v0.30.2",
"v0.30.0",
"v0.29.2",
"v0.29.1",
"v0.29.0",
"v0.28.2",
"v0.28.1",
"v0.28.0",
"v0.27.0",
"v0.26.2",
"v0.26.1",
"v0.26.0",
"v0.25.3",
"v0.25.2",
"v0.25.1",
"v0.25.0",
"v0.24.0",
"v0.22.0",
"v0.23.0",
"v0.21.0",
"v0.20.1",
"v0.20.0",
"v0.19.1",
"v0.19.0",
"v0.18.0",
"v0.17.0",
"v0.16.0",
"v0.15.3",
"v0.15.2",
"v0.15.1",
"v0.15.0",
"v0.14.1",
"v0.14.0",
"v0.13.1",
"v0.13.0",
"v0.12.0",
"v0.11.1",
"v0.11.0",
"v0.10.0",
"v0.9.0",
"v0.8.0",
"v0.7.1",
"v0.7.0",
"v0.6.0",
"v0.5.0",
"v0.4.0",
"v0.3.0",
"v0.2.0",
"v0.1.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-3711.json"
}
}
],
"modified": "2026-10-20T10:50:27.427303783Z",
"provider": "osv",
"references": [
"https://github.com/fastify/fastify/pull/627",
"https://hackerone.com/reports/303632"
],
"provider_metadata": {}
},
"related_cves": [
{
"value": "CVE-2018-3711",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 381725,
"published_at": "2018-06-07T02:29:07.847+00:00"
}