Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability in Multer prior to version 2.1.1 allows an attacker to trigger a Denial of Service (DoS) by sending malformed requests, potentially causing stack overflow. Users should upgrade to version 2.1.1 to receive a patch. No known workarounds are available.

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History

Wed, 04 Mar 2026 16:30:00 +0000

Type Values Removed Values Added
Description Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability in Multer prior to version 2.1.1 allows an attacker to trigger a Denial of Service (DoS) by sending malformed requests, potentially causing stack overflow. Users should upgrade to version 2.1.1 to receive a patch. No known workarounds are available.
Title Multer vulnerable to Denial of Service via uncontrolled recursion
Weaknesses CWE-674
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: openjs

Published:

Updated: 2026-03-04T17:12:25.815Z

Reserved: 2026-03-04T15:27:42.237Z

Link: CVE-2026-3520

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-03-04T17:16:22.610

Modified: 2026-03-04T17:16:22.610

Link: CVE-2026-3520

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses