CVE-2026-3520

Description

Multer is a node.js middleware for handling `multipart/form-data`. A vulnerability in Multer prior to version 2.1.1 allows an attacker to trigger a Denial of Service (DoS) by sending malformed requests, potentially causing stack overflow. Users should upgrade to version 2.1.1 to receive a patch. No known workarounds are available.

PUBLISHED Reserved 2026-03-04 | Published 2026-03-04 | Updated 2026-03-04 | Assigner openjs

Problem types

CWE-674: Uncontrolled Recursion

Product status

Credits

Yuki Matsuhashi reporter

Chris de Almeida remediation developer

Ulises Gascón remediation reviewer

References

github.com/...multer/security/advisories/GHSA-5528-5vmv-3xc2

www.cve.org/CVERecord?id=CVE-2026-3520

github.com/...ommit/7e66481f8b2e6c54b982b34c152479e096ce2752

cna.openjsf.org/security-advisories.html

cve.org (CVE-2026-3520)

nvd.nist.gov (CVE-2026-3520)

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