CVE-2026-5038

[CVE catalog]

A flaw was found in multer. This vulnerability allows a remote attacker to trigger a Denial of Service (DoS) by initiating and then aborting or sending malformed multipart uploads. This action leaves orphaned partial files on the disk, which can lead to the exhaustion of available disk space without requiring any specific application bug. multer: Multer: Denial of Service via aborted or malformed multipart uploads This is an Important denial of service vulnerability in `multer` when configured to use `diskStorage`. An attacker can exploit this flaw by initiating and then aborting or sending malformed multipart uploads, leading to the accumulation of orphaned partial files and eventual disk space exhaustion on affected Red Hat products that utilize `multer` for file handling. The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Severity

High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Published

Jun 15, 2026, 2:23:24 PM UTC

Source

[NVD] · [CVE record]

EPSS

0.37% · Oct 27, 2026

{
  "package_releases": [],
  "fixed_versions": [],
  "distribution_packages": [
    {
      "name": "multer",
      "fixed_version": "2.2.0",
      "applicability_unknown": true
    },
    {
      "name": "multer",
      "fixed_version": "",
      "applicability_unknown": true
    }
  ]
}