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CVE-2026-8162

multiparty vulnerable to Denial of Service via Uncaught Exception in filename* parameter parsing PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
multiparty / multipartyaffected 0 through 4.2.3; unaffected 4.3.0

CWE

CWE-755

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.