CVE-2026-3520

HIGH
2026-03-04 ce714d77-add3-4f53-aff5-83d477b104bb GHSA-5528-5vmv-3xc2
7.5
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

Lifecycle Timeline

3
Analysis Generated
Mar 12, 2026 - 22:05 vuln.today
Patch Released
Mar 09, 2026 - 18:03 nvd
Patch available
CVE Published
Mar 04, 2026 - 17:16 nvd
HIGH 7.5

Tags

Node.js Stack Overflow Denial Of Service Multer

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.

Analysis

Multer versions before 2.1.1 are susceptible to denial of service attacks when processing malformed multipart/form-data requests, which can trigger stack overflow conditions and crash Node.js applications. An unauthenticated remote attacker can exploit this vulnerability without user interaction to render affected services unavailable. …

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Remediation

Within 24 hours: Identify all applications using Multer and verify current version. Within 7 days: Apply patch to version 2.1.1 or later across all development, staging, and production environments. …

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Priority Score

38
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +38
POC: 0

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CVE-2026-3520 vulnerability details – vuln.today
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