High
node-multiparty — security advisory
multiparty@4.2.3 and lower versions are vulnerable to denial of service via uncaught exception. By sending a multipart/form-data request with a Content-Disposition header whose filename* parameter contains a malformed percent-encoding, the parser invokes decodeURI on the value without try/catch. The resulting URIError propagates as an uncaught exception and crashes the process. Impact: any service accepting multipart uploads via multiparty is affected. Workarounds: none. Upgrade to multiparty@4.3.0 or higher.
- Products
- node-multiparty
- Affected versions
- 4.0.0-1, 4.0.0-1ubuntu1, 4.2.1-1, 4.2.1-2, 4.2.2-2, 4.2.2-3, 4.2.3-2, 4.2.3-3, 4.2.3-4build1, 4.2.3-5, 4.3.0+~4.2.1-1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-8162
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:20 UTC · Revision 1
Source evidence
multiparty@4.2.3 and lower versions are vulnerable to denial of service via uncaught exception. By sending a multipart/form-data request with a Content-Disposition header whose filename* parameter contains a malformed percent-encoding, the parser invokes decodeURI on the value without try/catch. The resulting URIError propagates as an uncaught exception and crashes the process. Impact: any service accepting multipart uploads via multiparty is affected. Workarounds: none. Upgrade to multiparty@4.3.0 or higher.
osv:UBUNTU-CVE-2026-8162
node-multiparty
Fixed versions: Not specified
node-multiparty
Fixed versions: Not specified
node-multiparty
Fixed versions: Not specified
node-multiparty
Fixed versions: Not specified
node-multiparty
Fixed versions: Not specified
node-multiparty
Fixed versions: Not specified
node-multiparty
Fixed versions: Not specified
node-multiparty
Fixed versions: Not specified
Complete source record
{
"id": "bf513299d1d0e55d9a317a7b779ed17cdbe927b8d446364021eede48098dc684",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-8162",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-8162",
"summary": "multiparty@4.2.3 and lower versions are vulnerable to denial of service via uncaught exception. By sending a multipart/form-data request with a Content-Disposition header whose filename* parameter contains a malformed percent-encoding, the parser invokes decodeURI on the value without try/catch. The resulting URIError propagates as an uncaught exception and crashes the process. Impact: any service accepting multipart uploads via multiparty is affected. Workarounds: none. Upgrade to multiparty@4.3.0 or higher.",
"evidence": "osv:UBUNTU-CVE-2026-8162",
"products": [
{
"name": {
"value": "node-multiparty",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.0.0-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "node-multiparty",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.0.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "4.0.0-1ubuntu1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "node-multiparty",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.2.1-1",
"evidence": "/affected/2/versions"
},
{
"value": "4.2.1-2",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "node-multiparty",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.2.2-2",
"evidence": "/affected/3/versions"
},
{
"value": "4.2.2-3",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "node-multiparty",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.2.3-2",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "node-multiparty",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.2.3-2",
"evidence": "/affected/5/versions"
},
{
"value": "4.2.3-3",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "node-multiparty",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.2.3-5",
"evidence": "/affected/6/versions"
},
{
"value": "4.3.0+~4.2.1-1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "node-multiparty",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "4.2.3-3",
"evidence": "/affected/7/versions"
},
{
"value": "4.2.3-4build1",
"evidence": "/affected/7/versions"
},
{
"value": "4.2.3-5",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2026-8162",
"aliases": [
"UBUNTU-CVE-2026-8162"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-multiparty",
"purl": "pkg:deb/ubuntu/node-multiparty?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"4.0.0-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8162.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "node-multiparty",
"binary_version": "4.0.0-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-multiparty",
"purl": "pkg:deb/ubuntu/node-multiparty?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"4.0.0-1",
"4.0.0-1ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8162.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "node-multiparty",
"binary_version": "4.0.0-1ubuntu1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-multiparty",
"purl": "pkg:deb/ubuntu/node-multiparty?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"4.2.1-1",
"4.2.1-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8162.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "node-multiparty",
"binary_version": "4.2.1-2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-multiparty",
"purl": "pkg:deb/ubuntu/node-multiparty?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"4.2.2-2",
"4.2.2-3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8162.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "node-multiparty",
"binary_version": "4.2.2-3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-multiparty",
"purl": "pkg:deb/ubuntu/node-multiparty?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"4.2.3-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8162.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "node-multiparty",
"binary_version": "4.2.3-2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-multiparty",
"purl": "pkg:deb/ubuntu/node-multiparty?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"4.2.3-2",
"4.2.3-3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8162.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "node-multiparty",
"binary_version": "4.2.3-3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-multiparty",
"purl": "pkg:deb/ubuntu/node-multiparty?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"4.2.3-5",
"4.3.0+~4.2.1-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8162.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "node-multiparty",
"binary_version": "4.3.0+~4.2.1-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "node-multiparty",
"purl": "pkg:deb/ubuntu/node-multiparty?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"4.2.3-3",
"4.2.3-4build1",
"4.2.3-5"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-8162.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "node-multiparty",
"binary_version": "4.2.3-5"
}
]
}
}
],
"modified": "2026-10-17T13:01:10.911188518Z",
"provider": "osv",
"upstream": [
"CVE-2026-8162"
],
"references": [
"https://ubuntu.com/security/CVE-2026-8162",
"https://www.cve.org/CVERecord?id=CVE-2026-8162",
"https://github.com/pillarjs/multiparty/security/advisories/GHSA-xh3c-6gcq-g4rv"
]
},
"related_cves": [
{
"value": "CVE-2026-8162",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 361154,
"published_at": "2026-05-12T10:16:00+00:00"
}