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CVE-2026-3520

Multer vulnerable to Denial of Service via uncontrolled recursion PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
expressjs / multeraffected 0 before 2.1.1

CWE

CWE-674

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

redhat-SADP

A denial of service flaw was found in Multer, a Node.js middleware for handling `multipart/form-data`. A remote attacker can send specially crafted malformed requests which may induce a stack overflow. This can lead to a Denial of Service (DoS) making the service unavailable.