High
Security advisory
Netty 4.1.43.Final allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace (such as a [space]Transfer-Encoding:chunked line) and a later Content-Length header. This issue exists because of an incomplete fix for CVE-2019-16869.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-7238
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 05:41 UTC · Revision 1
Source evidence
Netty 4.1.43.Final allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace (such as a [space]Transfer-Encoding:chunked line) and a later Content-Length header. This issue exists because of an incomplete fix for CVE-2019-16869.
osv:CVE-2020-7238
Complete source record
{
"id": "11098f0aed3c64cf27adccc5faa487ce872bb25cd9eeeb8b35bf0ae59eb71b16",
"url": "https://osv.dev/vulnerability/CVE-2020-7238",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-7238",
"summary": "Netty 4.1.43.Final allows HTTP Request Smuggling because it mishandles Transfer-Encoding whitespace (such as a [space]Transfer-Encoding:chunked line) and a later Content-Length header. This issue exists because of an incomplete fix for CVE-2019-16869.",
"evidence": "osv:CVE-2020-7238",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2020-7238",
"aliases": [
"CVE-2020-7238",
"GHSA-ff2w-cq2g-wv5f"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/netty/netty",
"type": "GIT",
"events": [
{
"introduced": "d066f163d7476a4a332f95d4dc62af751378f536"
},
{
"last_affected": "d066f163d7476a4a332f95d4dc62af751378f536"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:netty:netty:4.1.43:*:*:*:*:*:*:*",
"range": [
{
"introduced": "4.1.43"
},
{
"last_affected": "4.1.43"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"4.1.43",
"netty-4.1.43.Final"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-7238.json"
}
}
],
"modified": "2026-10-24T10:30:32.515425239Z",
"provider": "osv",
"references": [
"https://lists.apache.org/thread.html/r131e572d003914843552fa45c4398b9903fb74144986e8b107c0a3a7%40%3Ccommits.cassandra.apache.org%3E",
"https://lists.apache.org/thread.html/rc8d554aad889d12b140d9fd7d2d6fc2e8716e9792f6f4e4b2cdc2d05%40%3Ccommits.cassandra.apache.org%3E",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TS6VX7OMXPDJIU5LRGUAHRK6MENAVJ46/",
"https://access.redhat.com/errata/RHSA-2020:0497",
"https://access.redhat.com/errata/RHSA-2020:0567",
"https://access.redhat.com/errata/RHSA-2020:0601",
"https://access.redhat.com/errata/RHSA-2020:0605",
"https://access.redhat.com/errata/RHSA-2020:0606",
"https://access.redhat.com/errata/RHSA-2020:0804",
"https://access.redhat.com/errata/RHSA-2020:0805",
"https://access.redhat.com/errata/RHSA-2020:0806",
"https://access.redhat.com/errata/RHSA-2020:0811",
"https://lists.debian.org/debian-lts-announce/2020/02/msg00017.html",
"https://lists.debian.org/debian-lts-announce/2020/02/msg00018.html",
"https://lists.debian.org/debian-lts-announce/2020/09/msg00003.html",
"https://netty.io/news/",
"https://www.debian.org/security/2021/dsa-4885",
"https://github.com/jdordonezn/CVE-2020-72381/issues/1"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "8.0"
},
{
"last_affected": "8.0"
},
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
},
{
"introduced": "10.0"
},
{
"last_affected": "10.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
{
"range": [
{
"introduced": "33"
},
{
"last_affected": "33"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.2:*:*:*:*:*:*:*",
"cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.3:*:*:*:*:*:*:*",
"cpe:2.3:a:redhat:jboss_enterprise_application_platform:7.4:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:jboss_enterprise_application_platform",
"extracted_events": [
{
"range": [
{
"introduced": "7.2"
},
{
"last_affected": "7.2"
},
{
"introduced": "7.3"
},
{
"last_affected": "7.3"
},
{
"introduced": "7.4"
},
{
"last_affected": "7.4"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2020-7238",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 433048,
"published_at": "2020-01-27T17:15:12.277+00:00"
}