{
"id": "GHSA-xh3c-6gcq-g4rv",
"aliases": [
"CVE-2026-8162"
],
"details": "### Impact\n\[email protected] and lower versions are vulnerable to denial of service via uncaught exception. By sending a `multipart/form-data` request with a `Content-Disposition: filename*=utf-8''` header containing a malformed percent-encoding (e.g., `%FF`, `%GG`), the parser invokes `decodeURI` on the value without try/catch. The resulting `URIError` propagates as an uncaught exception and crashes the process. Any service accepting multipart uploads via multiparty is affected.\n\n### Patches\n\nUsers should upgrade to [email protected] or higher.\n\n### Workarounds\n\nNone.",
"summary": "multiparty vulnerable to Denial of Service via Uncaught Exception in filename* parameter parsing",
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "4.3.0"
}
]
}
],
"package": {
"name": "multiparty",
"ecosystem": "npm"
},
"database_specific": {
"last_known_affected_version_range": "<= 4.2.3"
}
}
],
"modified": "2026-05-18T17:35:24Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"published": "2026-05-18T17:35:24Z",
"references": [
{
"url": "https://github.com/pillarjs/multiparty/security/advisories/GHSA-xh3c-6gcq-g4rv",
"type": "WEB"
},
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-8162",
"type": "ADVISORY"
},
{
"url": "https://cna.openjsf.org/security-advisories.html",
"type": "WEB"
},
{
"url": "https://github.com/pillarjs/multiparty",
"type": "PACKAGE"
},
{
"url": "https://github.com/pillarjs/multiparty/releases/tag/v4.3.0",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-755"
],
"severity": "HIGH",
"github_reviewed": true,
"nvd_published_at": "2026-05-12T10:16:49Z",
"github_reviewed_at": "2026-05-18T17:35:24Z"
}
}