GHSA-g5hg-p3ph-g8qg

Multer vulnerable to Denial of Service via unhandled exception

Source: GitHub Advisory Database (reviewed) High CVE-2025-48997

Packages

Ecosystem	Package	Affected	Fixed in
npm	multer	>= 1.4.4-lts.1, < 2.0.1	2.0.1

Details

As written in the advisory (Markdown source, shown as plain text).

### Impact 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. ### Patches Users should upgrade to `2.0.1` ### Workarounds None ### References https://github.com/expressjs/multer/commit/35a3272b611945155e046dd5cef11088587635e9 https://github.com/expressjs/multer/issues/1233 https://github.com/expressjs/multer/pull/1256

References

External links from the advisory. They lead to third-party sites.

https://github.com/expressjs/multer/security/advisories/GHSA-g5hg-p3ph-g8qg web
https://nvd.nist.gov/vuln/detail/CVE-2025-48997 advisory
https://github.com/expressjs/multer/issues/1233 web
https://github.com/expressjs/multer/pull/1256 web
https://github.com/expressjs/multer/commit/35a3272b611945155e046dd5cef11088587635e9 web
https://github.com/expressjs/multer package