CVE-2026-8162

· HIGHAnalyzed

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CVSS v3.1

7.5

EPSS

0.28%

Published

May 12, 2026

Modified

May 13, 2026

Public PoC / Exploit

All weaponized →

No public PoC or exploit code indexed for this CVE.

Links to public security research (Exploit-DB, Nuclei, Trickest, GitHub) for defensive use only.

Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

CWE-755

Affected Products (1)

pillarjs · multiparty (up to 4.3.0)vulnerable

References (2)

https://cna.openjsf.org/security-advisories.html

Third Party Advisory

https://github.com/pillarjs/multiparty/security/advisories/GHSA-xh3c-6gcq-g4rv

Vendor Advisory

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