Description
Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability in Multer prior to version 2.1.0 allows an attacker to trigger a Denial of Service (DoS) by dropping connection during file upload, potentially causing resource exhaustion. Users should upgrade to version 2.1.0 to receive a patch. No known workarounds are available.
Scores
CVSS v3
7.5
EPSS
0.0002
EPSS Percentile
4.9%
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-772
Status
published
Products (3)
expressjs/multer
< 2.1.0
expressjs/multer
0.0.0 - 2.1.0
npm/multer
0 - 2.1.0npm
Published
Feb 27, 2026
Tracked Since
Feb 27, 2026