CVE-2026-8162

{"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": "2026-05-12T12:33:12.647Z"}, "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"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-12T12:32:56.127597Z", "id": "CVE-2026-8162", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-12T12:33:12.647Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-8162", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-12T12:32:56.127597Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-12T12:33:08.706Z"}}], "cna": {"title": "multiparty vulnerable to Denial of Service via Uncaught Exception in filename* parameter parsing", "credits": [{"lang": "en", "type": "reporter", "value": "Byambadalai Sumiya"}, {"lang": "en", "type": "remediation developer", "value": "Blake Embrey"}, {"lang": "en", "type": "remediation reviewer", "value": "Ulises Gasc\u00f3n"}], "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "multiparty", "product": "multiparty", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "4.2.3"}, {"status": "unaffected", "version": "4.3.0", "versionType": "semver"}], "packageURL": "pkg:npm/multiparty", "defaultStatus": "unaffected"}], "references": [{"url": "https://github.com/pillarjs/multiparty/security/advisories/GHSA-xh3c-6gcq-g4rv"}, {"url": "https://cna.openjsf.org/security-advisories.html"}], "x_generator": {"engine": "cve-kit 1.0.0"}, "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", "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.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-755", "description": "CWE-755: Improper Handling of Exceptional Conditions"}]}], "providerMetadata": {"orgId": "ce714d77-add3-4f53-aff5-83d477b104bb", "shortName": "openjs", "dateUpdated": "2026-05-12T09:05:12.591Z"}}}, "cveMetadata": {"cveId": "CVE-2026-8162", "state": "PUBLISHED", "dateUpdated": "2026-05-12T12:33:12.647Z", "dateReserved": "2026-05-08T11:05:42.781Z", "assignerOrgId": "ce714d77-add3-4f53-aff5-83d477b104bb", "datePublished": "2026-05-12T09:05:12.591Z", "assignerShortName": "openjs"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "packageURL": "pkg:npm/multiparty", "product": "multiparty", "vendor": "multiparty", "versions": [{"lessThanOrEqual": "4.2.3", "status": "affected", "version": "0", "versionType": "semver"}, {"status": "unaffected", "version": "4.3.0", "versionType": "semver"}]}], "source": "ce714d77-add3-4f53-aff5-83d477b104bb"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:pillarjs:multiparty:*:*:*:*:*:node.js:*:*", "matchCriteriaId": "7D1FB8AD-53AB-4C0D-A503-231C4ACAF90D", "versionEndExcluding": "4.3.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "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."}, {"lang": "es", "value": "multiparty@4.2.3 y versiones anteriores son vulnerables a denegaci\u00f3n de servicio a trav\u00e9s de una excepci\u00f3n no capturada. Al enviar una solicitud multipart/form-data con una cabecera Content-Disposition cuyo par\u00e1metro filename contiene una codificaci\u00f3n porcentual malformada, el analizador invoca decodeURI sobre el valor sin try/catch. El URIError resultante se propaga como una excepci\u00f3n no capturada y bloquea el proceso. Impacto: cualquier servicio que acepte cargas multipart a trav\u00e9s de multiparty se ve afectado. Soluciones alternativas: ninguna. Actualice a multiparty@4.3.0 o superior."}], "id": "CVE-2026-8162", "lastModified": "2026-11-11T20:10:00.273", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "ce714d77-add3-4f53-aff5-83d477b104bb", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-8162", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-05-12T12:32:56.127597Z", "version": "2.0.3"}}]}, "published": "2026-05-12T10:16:49.110", "references": [{"source": "ce714d77-add3-4f53-aff5-83d477b104bb", "tags": ["Third Party Advisory"], "url": "https://cna.openjsf.org/security-advisories.html"}, {"source": "ce714d77-add3-4f53-aff5-83d477b104bb", "tags": ["Vendor Advisory"], "url": "https://github.com/pillarjs/multiparty/security/advisories/GHSA-xh3c-6gcq-g4rv"}], "sourceIdentifier": "ce714d77-add3-4f53-aff5-83d477b104bb", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-755"}], "source": "ce714d77-add3-4f53-aff5-83d477b104bb", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,4.2.3]"}}, {"platform": null, "status": "unaffected", "versions": {"scheme": "semver", "value": "4.3.0"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "multiparty", "source": "cna", "vendor": "multiparty"}, "product": "multiparty", "vendor": "multiparty"}], "created": "2026-05-12T10:45:14.167179+00:00", "updated": "2026-05-13T10:39:13.138657+00:00", "vendors": ["multiparty", "multiparty$PRODUCT$multiparty"]}