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CVE-2025-47944

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Date: May 19, 2025

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.

Severity Score

Related Resources (6)

https://github.com/expressjs/multer/commit/2c8505f207d923dd8de13a9f93a4563e59933665
https://github.com/expressjs/multer/issues/1176
https://github.com/expressjs/multer
https://nvd.nist.gov/vuln/detail/CVE-2025-47944
https://github.com/expressjs/multer/security/advisories/GHSA-4pg4-qvpc-4q3h
https://www.mend.io/vulnerability-database/CVE-2025-47944

Severity Score

Weakness Type (CWE)

Uncaught Exception

CWE-248

Top Fix

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Upgrade Version

Upgrade to version multer - 2.0.0;https://github.com/expressjs/multer.git - v2.0.0

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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