Findings

CVE-2026-3304

Multer is a node.js middleware for handling .

Published Feb 27, 2026 · updated Jul 15, 2026 · expressjs multer

Multer is a node.js middleware for handling . 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.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Feb 27, 2026 · NIST NVD

    Detected

    Multer is a node.js middleware for handling . 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.

  2. Jul 15, 2026 · NIST NVD

    Updated

    Multer is a node.js middleware for handling . 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

  • cpe expressjs/multerversion unspecified

Sources

  • CVE.orgVulnerability recordCVE-2026-3304

    Official CVE identifier

    cve.org
  • NIST NVDVulnerability recordCVE-2026-3304

    Multer is a node.js middleware for handling . 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.

    nvd.nist.gov

References