Vulnerability Details CVE-2026-3520
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 12.6%
CVSS Severity
CVSS v3 Score 7.5
Products affected by CVE-2026-3520
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cpe:2.3:a:expressjs:multer:*