🛡️ CVE-2026-2359 — multer

🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-772 OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Multer is a node.js middleware for handling multipart/form-data. A vulnerability in Multer prior to version 2.1.0 allows an attacker to trigger a Denial of Service (DoS) by dropping connection during file upload, potentially causing resource exhaustion. Users should upgrade to version 2.1.0 to receive a patch. No known workarounds are available.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. Rated impact: confidentiality none, integrity none, availability high.

Weakness class

CVE-2026-2359 is classified as CWE-772: Missing Release of Resource. A resource is acquired but never released on some paths, depleting the pool over time.

Affected software

CVE-2026-2359 is recorded against 1 package.

  • multer

Timeline and source

Published on 1 March 2026 and last revised on 15 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from OSV.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Web)
cna.openjsf.org (Web)
github.com (Package)
www.cve.org (Web)

CVE-2026-2359 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
CWE CWE-772
Public Exploit ✅ No
Source OSV
Published 2026-03-01
Updated 2026-08-12
Modified 2026-07-15

Affected Packages

Software From version Fixed in
multer — —

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