CVE-2025-48997Multer vulnerable to Denial of Service via unhandled exception

Description

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 empty string field name. This request causes an unhandled exception, leading to a crash of the process. Users should upgrade to `2.0.1` to receive a patch. No known workarounds are available.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://github.com/expressjs/multer/security/advisories/GHSA-g5hg-p3ph-g8qg
• https://github.com/expressjs/multer/issues/1233
• https://github.com/expressjs/multer/pull/1256
• https://github.com/expressjs/multer/commit/35a3272b611945155e046dd5cef11088587635e9