CVE-2025-47944 HIGH

CVE-2025-47944: Multer vulnerable to Denial of Service from maliciously crafted requests

Vendor Expressjs
Product multer
Weakness CWE-248
Published May 19, 2025
Last update May 20, 2025
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability that is present starting in version 1.4.4-lts.1 and prior to version 2.0.0 allows an attacker to trigger a Denial of Service (DoS) by sending a malformed multi-part upload request. This request causes an unhandled exception, leading to a crash of the process. Users should upgrade to version 2.0.0 to receive a patch. No known workarounds are available.

Key dates

02Disclosure timeline

May 19, 2025 CVE published
May 20, 2025 Record updated