CVE Watch22 oct 2026

CVE-2026-113872

multer is a middleware for Node.js that handles multipart/form-data file uploads. In versions from 2.0.0 before 2.5.0, when multer is config

CVSS

7.5

Alto

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 22 oct 2026 · Última mod.: 22 oct 2026 · CWE-248 · CWE-404

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

multer is a middleware for Node.js that handles multipart/form-data file uploads. In versions from 2.0.0 before 2.5.0, when multer is configured with an asynchronous fileFilter, a single request can crash the Node.js process. If the request is aborted while one file's asynchronous fileFilter is still pending, the pending callback later resumes a parsing stream that multer has already torn down, and the underlying parser emits an error on a stream that no longer has an error listener, which Node raises as an unhandled error event so the process exits. Any application using multer with an asynchronous fileFilter is affected regardless of storage engine, while uploads using a synchronous fileFilter are not affected. The issue is fixed in multer 2.5.0, and users should upgrade to 2.5.0 or later. As a workaround, use a synchronous fileFilter.

Referencias oficiales

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