High
Security advisory
It was discovered that Undertow before 1.4.17, 1.3.31 and 2.0.0 processes http request headers with unusual whitespaces which can cause possible http request smuggling.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2017-12165
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:35 UTC · Revision 1
Source evidence
It was discovered that Undertow before 1.4.17, 1.3.31 and 2.0.0 processes http request headers with unusual whitespaces which can cause possible http request smuggling.
osv:CVE-2017-12165
Complete source record
{
"id": "2f84dbe8d31489a4c936fff020ff4230240fb6d637f274a1e7ddbd46b1c94087",
"url": "https://osv.dev/vulnerability/CVE-2017-12165",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2017-12165",
"summary": "It was discovered that Undertow before 1.4.17, 1.3.31 and 2.0.0 processes http request headers with unusual whitespaces which can cause possible http request smuggling.",
"evidence": "osv:CVE-2017-12165",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2017-12165",
"aliases": [
"CVE-2017-12165",
"GHSA-5gg7-5wv8-4gcj"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/undertow-io/undertow",
"type": "GIT",
"events": [
{
"introduced": "30392f538d254ed54834854e3f7face2bf945dcb"
},
{
"fixed": "ca20c31781dd721837775b92ad5783d742546e17"
},
{
"introduced": "967b5ecf796fe32afb9a131c7695f731b51303ca"
},
{
"fixed": "9353aa465ba960f0c363fd9d8a164e42c0bccafa"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:redhat:undertow:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.0.0"
},
{
"fixed": "1.3.31"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:redhat:undertow:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "1.4.0"
},
{
"fixed": "1.4.17"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"1.4.16.Final",
"1.3.30.Final",
"1.4.15.Final",
"1.4.14.Final",
"1.4.13.Final",
"1.4.12.Final",
"1.3.28.Final",
"1.4.11.Final",
"1.3.27.Final",
"1.4.10.Final",
"1.3.26.Final",
"1.4.8.Final",
"1.4.7.Final",
"1.4.6.Final",
"1.4.5.Final",
"1.4.4.Final",
"1.3.25.Final",
"1.4.3.Final",
"1.4.2.Final",
"1.4.1.Final",
"1.4.0.Final",
"1.3.24.Final",
"1.3.23.Final",
"1.3.22.Final",
"1.3.21.Final",
"1.3.20.Final",
"1.3.19.Final",
"1.3.18.Final",
"1.3.17.Final",
"1.3.16.Final",
"1.3.15.Final",
"1.3.14.Final",
"1.3.13.Final",
"1.3.12.Final",
"1.3.11.Final",
"1.3.10.Final",
"1.3.9.Final",
"1.3.8.Final",
"1.3.7.Final",
"1.3.6.Final",
"1.3.5.Final",
"1.3.3.Final",
"1.3.2.Final",
"1.3.1.Final",
"1.3.0.Final",
"1.3.0.CR3",
"1.3.0.CR2",
"1.3.0.CR1",
"1.3.0.Beta13",
"1.3.0.Beta12",
"1.3.0.Beta11",
"1.3.0.Beta10",
"1.3.0.Beta9",
"1.3.0.Beta8",
"1.3.0.Beta7",
"1.3.0.Beta6",
"1.3.0.Beta5",
"1.3.0.Beta4",
"1.3.0.Beta3",
"1.3.0.Beta2",
"1.3.0.Beta1",
"1.2.4.Final",
"1.2.3.Final",
"1.2.2.Final",
"1.2.1.Final",
"1.2.0.Final",
"1.2.0.CR1",
"1.2.0.Beta10",
"1.2.0.Beta9",
"1.2.0.Beta8",
"1.2.0.Beta7",
"1.2.0.Beta6",
"1.2.0.Beta5",
"1.2.0.Beta4",
"1.2.0.Beta3",
"1.2.0.Beta2",
"1.2.0.Beta1",
"1.1.0.Beta8",
"1.1.0.Beta7",
"1.1.0.Beta6",
"1.1.0.Beta5",
"1.1.0.Beta4",
"1.1.0.Beta3",
"1.1.0.Beta2",
"1.1.0.Beta1",
"1.0.3.Final",
"1.0.2.Final",
"1.0.1.Final",
"1.0.0.Final"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-12165.json"
}
}
],
"modified": "2026-10-24T10:30:55.423320420Z",
"provider": "osv",
"references": [
"https://access.redhat.com/errata/RHSA-2017:3454",
"https://access.redhat.com/errata/RHSA-2017:3455",
"https://access.redhat.com/errata/RHSA-2017:3456",
"https://access.redhat.com/errata/RHSA-2017:3458",
"https://access.redhat.com/errata/RHSA-2018:0002",
"https://access.redhat.com/errata/RHSA-2018:0003",
"https://access.redhat.com/errata/RHSA-2018:0004",
"https://access.redhat.com/errata/RHSA-2018:0005",
"https://access.redhat.com/errata/RHSA-2018:1322",
"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-12165"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.0.0:*:*:*:*:*:*:*",
"cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.1.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:jboss_enterprise_application_platform",
"extracted_events": [
{
"range": [
{
"introduced": "7.0.0"
},
{
"last_affected": "7.0.0"
},
{
"introduced": "7.1.0"
},
{
"last_affected": "7.1.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:redhat:undertow:2.0.0:alpha_1:*:*:*:*:*:*"
],
"vendor_product": "redhat:undertow",
"extracted_events": [
{
"range": [
{
"introduced": "2.0.0-alpha_1"
},
{
"last_affected": "2.0.0-alpha_1"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2017-12165",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 438416,
"published_at": "2018-07-27T15:29:00.237+00:00"
}