All the vulnerabilities related to the version 1.4.4 of the package
Multer vulnerable to Denial of Service via memory leaks from unclosed streams
Multer <2.0.0 is 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 is not closed, violating Node.js stream safety guidance.
This leads to unclosed streams accumulating over time, consuming memory and file descriptors. Under sustained or repeated failure conditions, this can result in denial of service, requiring manual server restarts to recover. All users of Multer handling file uploads are potentially impacted.
Users should upgrade to 2.0.0
None
Multer vulnerable to Denial of Service from maliciously crafted requests
A vulnerability in Multer versions >=1.4.4-lts.1 allows an attacker to trigger a Denial of Service (DoS) by sending a malformed multi-part upload request. This request causes an unhandled exception, leading to a crash of the process.
Users should upgrade to 2.0.0
None
Multer vulnerable to Denial of Service via unhandled exception from malformed request
A vulnerability in Multer versions >= 1.4.4-lts.1, < 2.0.2 allows an attacker to trigger a Denial of Service (DoS) by sending a malformed request. This request causes an unhandled exception, leading to a crash of the process.
Users should upgrade to 2.0.2
None
Multer vulnerable to Denial of Service via unhandled exception
A vulnerability in Multer versions >=1.4.4-lts.1, <2.0.1 allows an attacker to trigger a Denial of Service (DoS) by sending an upload file request with an empty string field name. This request causes an unhandled exception, leading to a crash of the process.
Users should upgrade to 2.0.1
None
https://github.com/expressjs/multer/commit/35a3272b611945155e046dd5cef11088587635e9 https://github.com/expressjs/multer/issues/1233 https://github.com/expressjs/multer/pull/1256
Crash in HeaderParser in dicer
This affects all versions of the package dicer. A malicious attacker can send a modified form to the server and crash the Node.js service. A complete denial of service can be achieved by sending the malicious form in a loop.
