GHSA-xf7r-hgr6-v32p

Multer vulnerable to Denial of Service via incomplete cleanup

Source: GitHub Advisory Database (reviewed) High CVE-2026-3304

Packages

Ecosystem	Package	Affected	Fixed in
npm	multer	< 2.1.0	2.1.0

Details

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

### Impact A vulnerability in Multer versions < 2.1.0 allows an attacker to trigger a Denial of Service (DoS) by sending malformed requests, potentially causing resource exhaustion. ### Patches Users should upgrade to `2.1.0` ### Workarounds None

References

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

https://github.com/expressjs/multer/security/advisories/GHSA-xf7r-hgr6-v32p web
https://nvd.nist.gov/vuln/detail/CVE-2026-3304 advisory
https://github.com/expressjs/multer/commit/739919097dde3921ec31b930e4b9025036fa74ee web
https://cna.openjsf.org/security-advisories.html web
https://github.com/expressjs/multer package
https://www.cve.org/CVERecord?id=CVE-2026-3304 web