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.

There are packages installed that are affected by a vulnerability referenced in the following CVE:

  - 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. (CVE-2026-3520)

ID	Name	Product	Family	Type	Severity
458974	Echo: multer: security update to 2.1.1	Tenable Cloud Security	Echo Local Security Checks	Local	high
458974	Echo: multer: security update to 2.1.1	Tenable Self-Hosted Container Security	Echo Local Security Checks	Local	high
438366	SCA: security update for multer (GHSA-5528-5vmv-3xc2)	Tenable Cloud Security	SCA Checks	Local	high
438366	SCA: security update for multer (GHSA-5528-5vmv-3xc2)	Tenable Self-Hosted Container Security	SCA Checks	Local	high

Detections

Analytics

CVE-2026-3520

high

Tenable Plugins

high

high

high

high