CVE-2026-3304: Multer vulnerable to Denial of Service via incomplete cleanup
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.
References
- cna.openjsf.org/security-advisories.html
- github.com/advisories/GHSA-xf7r-hgr6-v32p
- github.com/expressjs/multer
- github.com/expressjs/multer/commit/739919097dde3921ec31b930e4b9025036fa74ee
- github.com/expressjs/multer/security/advisories/GHSA-xf7r-hgr6-v32p
- nvd.nist.gov/vuln/detail/CVE-2026-3304
- www.cve.org/CVERecord?id=CVE-2026-3304
Code Behaviors & Features
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