MediumFix available
httpcomponents-client — security advisory
Apache HttpClient versions prior to version 4.5.13 and 5.0.3 can misinterpret malformed authority component in request URIs passed to the library as java.net.URI object and pick the wrong target host for request execution.
- Products
- httpcomponents-client
- Affected versions
- 4.2.5-2, 4.3.2-1, 4.3.3-1, 4.3.3-1ubuntu0.1, 4.3.3-1ubuntu0.1+esm1, 4.4.1-1, 4.5.1-1, 4.5.10-2, 4.5.11-1, 4.5.3-1, 4.5.4-1, 4.5.5-1, 4.5.9-1
- Fixed versions
- 4.3.3-1ubuntu0.1+esm2, 4.5.1-1ubuntu0.1~esm1, 4.5.11-1ubuntu0.1~esm1, 4.5.5-1ubuntu0.1~esm1
- CVEs
- CVE-2020-13956
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 30 Oct 2026, 06:37 UTC · Revision 1
Source evidence
Apache HttpClient versions prior to version 4.5.13 and 5.0.3 can misinterpret malformed authority component in request URIs passed to the library as java.net.URI object and pick the wrong target host for request execution.
osv:UBUNTU-CVE-2020-13956
httpcomponents-client
Fixed versions: 4.3.3-1ubuntu0.1+esm2
httpcomponents-client
Fixed versions: 4.5.1-1ubuntu0.1~esm1
httpcomponents-client
Fixed versions: 4.5.5-1ubuntu0.1~esm1
httpcomponents-client
Fixed versions: 4.5.11-1ubuntu0.1~esm1
Complete source record
{
"id": "0c2f620fa4dd1219c86709dead5520cc4653b9834928812049047be28909afa5",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-13956",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2020-13956",
"summary": "Apache HttpClient versions prior to version 4.5.13 and 5.0.3 can misinterpret malformed authority component in request URIs passed to the library as java.net.URI object and pick the wrong target host for request execution.",
"evidence": "osv:UBUNTU-CVE-2020-13956",
"products": [
{
"name": {
"value": "httpcomponents-client",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.3.3-1ubuntu0.1+esm2",
"evidence": "/affected/0/ranges"
}
],
"affected_versions": [
{
"value": "4.2.5-2",
"evidence": "/affected/0/versions"
},
{
"value": "4.3.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.3.3-1",
"evidence": "/affected/0/versions"
},
{
"value": "4.3.3-1ubuntu0.1",
"evidence": "/affected/0/versions"
},
{
"value": "4.3.3-1ubuntu0.1+esm1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "httpcomponents-client",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.5.1-1ubuntu0.1~esm1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "4.4.1-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.5.1-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "httpcomponents-client",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.5.5-1ubuntu0.1~esm1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "4.5.3-1",
"evidence": "/affected/2/versions"
},
{
"value": "4.5.4-1",
"evidence": "/affected/2/versions"
},
{
"value": "4.5.5-1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "httpcomponents-client",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "4.5.11-1ubuntu0.1~esm1",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": [
{
"value": "4.5.9-1",
"evidence": "/affected/3/versions"
},
{
"value": "4.5.10-2",
"evidence": "/affected/3/versions"
},
{
"value": "4.5.11-1",
"evidence": "/affected/3/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2020-13956",
"aliases": [
"UBUNTU-CVE-2020-13956"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.3.3-1ubuntu0.1+esm2"
}
]
}
],
"package": {
"name": "httpcomponents-client",
"purl": "pkg:deb/ubuntu/httpcomponents-client?arch=source&distro=trusty%2Fesm",
"ecosystem": "Ubuntu:Pro:14.04:LTS"
},
"versions": [
"4.2.5-2",
"4.3.2-1",
"4.3.3-1",
"4.3.3-1ubuntu0.1",
"4.3.3-1ubuntu0.1+esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-13956.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libhttpclient-java",
"binary_version": "4.3.3-1ubuntu0.1+esm2"
},
{
"binary_name": "libhttpmime-java",
"binary_version": "4.3.3-1ubuntu0.1+esm2"
}
],
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.5.1-1ubuntu0.1~esm1"
}
]
}
],
"package": {
"name": "httpcomponents-client",
"purl": "pkg:deb/ubuntu/httpcomponents-client?arch=source&distro=esm-apps%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
"4.4.1-1",
"4.5.1-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-13956.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libhttpclient-java",
"binary_version": "4.5.1-1ubuntu0.1~esm1"
},
{
"binary_name": "libhttpmime-java",
"binary_version": "4.5.1-1ubuntu0.1~esm1"
}
],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.5.5-1ubuntu0.1~esm1"
}
]
}
],
"package": {
"name": "httpcomponents-client",
"purl": "pkg:deb/ubuntu/httpcomponents-client?arch=source&distro=esm-apps%2Fbionic",
"ecosystem": "Ubuntu:Pro:18.04:LTS"
},
"versions": [
"4.5.3-1",
"4.5.4-1",
"4.5.5-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-13956.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libhttpclient-java",
"binary_version": "4.5.5-1ubuntu0.1~esm1"
},
{
"binary_name": "libhttpmime-java",
"binary_version": "4.5.5-1ubuntu0.1~esm1"
}
],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.5.11-1ubuntu0.1~esm1"
}
]
}
],
"package": {
"name": "httpcomponents-client",
"purl": "pkg:deb/ubuntu/httpcomponents-client?arch=source&distro=esm-apps%2Ffocal",
"ecosystem": "Ubuntu:Pro:20.04:LTS"
},
"versions": [
"4.5.9-1",
"4.5.10-2",
"4.5.11-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-13956.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libhttpclient-java",
"binary_version": "4.5.11-1ubuntu0.1~esm1"
},
{
"binary_name": "libhttpmime-java",
"binary_version": "4.5.11-1ubuntu0.1~esm1"
}
],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}
}
],
"modified": "2026-10-12T14:20:19.850158443Z",
"provider": "osv",
"upstream": [
"CVE-2020-13956"
],
"references": [
"https://ubuntu.com/security/CVE-2020-13956",
"https://bugzilla.redhat.com/show_bug.cgi?id=1886587",
"https://ubuntu.com/security/notices/USN-5239-1",
"https://www.cve.org/CVERecord?id=CVE-2020-13956"
]
},
"related_cves": [
{
"value": "CVE-2020-13956",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 299945,
"published_at": "2020-12-02T17:15:00+00:00"
}