CVE•Published 2026-02-27•Modified 2026-07-15•0 articles on news•4 live references•NVD data

CVE-2026-3304Expressjs · Multer

Vulnerability data via NVD (ingested)

CVSS v3.1

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS percentile

Exploit Prediction Scoring System · top 53% of all CVEs

Weaknesses (CWE)

CWE-459Incomplete Cleanup

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 sending malformed requests, potentially causing resource exhaustion. Users should upgrade to version 2.1.0 to receive a patch. No known workarounds are available.

Timeline

Published 2026-02-27

Modified 2026-07-15

External references

NVD MITRE Exploit-DB VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-3304

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Expressjs Multer"

All exposed Expressjs Multer instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Multer"

HTTP body or banner mentions "Multer" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-3304