CVE-2026-3520
HIGHMulter <2.1.1 - DoS
Title source: llmDescription
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.
Scores
CVSS v3
7.5
EPSS
0.0004
EPSS Percentile
12.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Classification
CWE
CWE-674
Status
published
Affected Products (2)
npm/multer
< 2.1.1npm
expressjs/multer
< 2.1.1
Timeline
Published
Mar 04, 2026
Tracked Since
Mar 05, 2026