CVE-2026-3304
February 27, 2026
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 sending malformed requests, potentially causing resource exhaustion. Users should upgrade to version 2.1.0 to receive a patch. No known workarounds are available.
Affected Packages
https://github.com/expressjs/multer.git (GITHUB):
Affected version(s) >=v1.0.0 <v2.1.0Fix Suggestion:
Update to version v2.1.0multer (NPM):
Affected version(s) >=0.0.1 <2.1.0Fix Suggestion:
Update to version 2.1.0multer (NPM):
Affected version(s) >=0.0.1 <2.1.0Fix Suggestion:
Update to version 2.1.0Related Resources (6)
Do you need more information?
Contact UsCVSS v4
Base Score:
8.7
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
NONE
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Weakness Type (CWE)
Incomplete Cleanup
EPSS
Base Score:
0.06
