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Product · expressjs

multer

7 known vulnerabilities.

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  • High 8.7

    Multer vulnerable to Denial of Service via uncontrolled recursion

    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…

  • High 8.7
    CVE-2026-3304 Public exploit

    Multer vulnerable to Denial of Service via incomplete cleanup

    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 up…

  • High 8.7

    Multer vulnerable to Denial of Service via resource exhaustion

    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. Use…

  • High 7.5
    CVE-2025-7338 Public exploit

    Multer vulnerable to Denial of Service via unhandled exception from malformed request

    Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability that is present starting in version 1.4.4-lts.1 and prior to version 2.0.2 allows an attacker to trigger a Denial of Service (DoS) by sending a malformed multi-part upload requ…

  • High 8.7

    Multer vulnerable to Denial of Service via unhandled exception

    Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability that is present starting in version 1.4.4-lts.1 and prior to version 2.0.1 allows an attacker to trigger a Denial of Service (DoS) by sending an upload file request with an emp…

  • High 7.5

    Multer vulnerable to Denial of Service from maliciously crafted requests

    Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability that is present starting in version 1.4.4-lts.1 and prior to version 2.0.0 allows an attacker to trigger a Denial of Service (DoS) by sending a malformed multi-part upload requ…

  • High 7.5

    Multer vulnerable to Denial of Service via memory leaks from unclosed streams

    Multer is a node.js middleware for handling `multipart/form-data`. Versions prior to 2.0.0 are vulnerable to a resource exhaustion and memory leak issue due to improper stream handling. When the HTTP request stream emits an error, the internal `busboy` stream…