CVE-2026-8162

Updated on 12 May 2026

Severity

7.5 High severity

Details

CVSS score
7.5
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Overview

About vulnerability

Impact

[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.

Patches

Users should upgrade to [email protected] or higher.

Workarounds

None.

Details

Affected packages:
multiparty @ 3.3.2 (+9 more)

Fixes