{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-8162", "assignerOrgId": "ce714d77-add3-4f53-aff5-83d477b104bb", "state": "PUBLISHED", "assignerShortName": "openjs", "dateReserved": "2026-05-08T11:05:42.781Z", "datePublished": "2026-05-12T09:05:12.591Z", "dateUpdated": "2026-05-12T09:05:12.591Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "ce714d77-add3-4f53-aff5-83d477b104bb", "shortName": "openjs", "dateUpdated": "2026-05-12T09:05:12.591Z"}, "title": "multiparty vulnerable to Denial of Service via Uncaught Exception in filename* parameter parsing", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-755", "description": "CWE-755: Improper Handling of Exceptional Conditions", "type": "CWE"}]}], "affected": [{"vendor": "multiparty", "product": "multiparty", "versions": [{"status": "affected", "version": "0", "lessThanOrEqual": "4.2.3", "versionType": "semver"}, {"status": "unaffected", "version": "4.3.0", "versionType": "semver"}], "defaultStatus": "unaffected", "packageURL": "pkg:npm/multiparty"}], "descriptions": [{"lang": "en", "value": "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.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "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."}]}], "references": [{"url": "https://github.com/pillarjs/multiparty/security/advisories/GHSA-xh3c-6gcq-g4rv"}, {"url": "https://cna.openjsf.org/security-advisories.html"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH", "baseSeverity": "HIGH", "baseScore": 7.5, "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}}], "credits": [{"lang": "en", "value": "Byambadalai Sumiya", "type": "reporter"}, {"lang": "en", "value": "Blake Embrey", "type": "remediation developer"}, {"lang": "en", "value": "Ulises Gasc\u00f3n", "type": "remediation reviewer"}], "x_generator": {"engine": "cve-kit 1.0.0"}}}}

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