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.
Scores
CVSS v3
7.5
EPSS
0.0006
EPSS Percentile
19.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-674
Status
published
Products (2)
expressjs/multer
< 2.1.1
npm/multer
0 - 2.1.1npm
Published
Mar 04, 2026
Tracked Since
Mar 05, 2026