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Vulnerabilities

Security fix · CVE-2026-113872

multer is a middleware for Node.js that handles multipart/form-data file uploads.

Published Oct 22, 2026 · catalog updated Oct 23, 2026 · Red Hat Red Hat Enterprise Linux

Last checked Nov 3, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-113872. EPSS is 0.44%. Act only if a listed version of Red Hat Red Hat Enterprise Linux is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
High7.5
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.44%
Remediation
Version ranges on file
Affected products
npm multer · package npm

multer is a middleware for Node.js that handles multipart/form-data file uploads. In versions from 2.0.0 before 2.5.0, when multer is configured with an asynchronous fileFilter, a single request can crash the Node.js process. If the request is aborted while one file's asynchronous fileFilter is still pending, the pending callback later resumes a parsing stream that multer has already torn down, and the underlying parser emits an error on a stream that no longer has an error listener, which Node raises as an unhandled error event so the process exits. Any application using multer with an asynchronous fileFilter is affected regardless of storage engine, while uploads using a synchronous fileFilter are not affected. The issue is fixed in multer 2.5.0, and users should upgrade to 2.5.0 or later. As a workaround, use a synchronous fileFilter.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • npm multer>= 2.0.0, < 2.5.0
  • package npmversion unspecified

How to fix CVE-2026-113872

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-113872. EPSS is 0.44%. Act only if a listed version of Red Hat Red Hat Enterprise Linux is installed.

Which versions are affected?

Compare what you have installed with >= 2.0.0, < 2.5.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-248; CWE-404. EPSS 0.44%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 22, 2026 · NIST NVD

    Detected

    multer is a middleware for Node.js that handles multipart/form-data file uploads. In versions from 2.0.0 before 2.5.0, when multer is configured with an asynchronous fileFilter, a single request can crash the Node.js process. If the request is aborted while one file's asynchronous fileFilter is still pending, the pending callback later resumes a parsing stream that multer has already torn down, an

  2. Oct 22, 2026 · NIST NVD

    Updated

    multer is a middleware for Node.js that handles multipart/form-data file uploads. In versions from 2.0.0 before 2.5.0, when multer is configured with an asynchronous fileFilter, a single request can crash the Node.js process. If the request is aborted while one file's asynchronous fileFilter is still pending, the pending callback later resumes a parsing stream that multer has already torn down, an

  3. Oct 23, 2026 · GitHub Advisory Database

    Updated

    ### Impact When is configured with an asynchronous , a single request can crash the Node.js process. If a request is aborted (for example when one file is rejected) while another file's async is still pending, the pending callback later resumes a parsing stream that multer has already torn down. busboy then emits an error on a stream that no longer has an error listener, which Node raises as an un

Sources

  • CVE.orgVulnerability recordCVE-2026-113872

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-113872

    30-day exploitation probability 0.44%

    first.org
  • GitHub Advisory DatabasePackage advisoryGHSA-q7qp-rjg7-q26m

    multer vulnerable to Denial of Service via a pending asynchronous fileFilter after request teardown

    github.com
  • GitLab Advisory DatabasePackage advisoryCVE-2026-113872

    When multer is configured with an asynchronous fileFilter, a single request can crash the Node.js process. If a request is aborted (for example when one file is rejected) while another file's async fileFilter is still pending, the pending callback later resumes a parsing stream that multer has already torn down. busboy then emits an error on a stream that no longer has an error listener, which Nod

    advisories.gitlab.com
  • NIST NVDVulnerability recordCVE-2026-113872

    multer is a middleware for Node.js that handles multipart/form-data file uploads. In versions from 2.0.0 before 2.5.0, when multer is configured with an asynchronous fileFilter, a single request can crash the Node.js process. If the request is aborted while one file's asynchronou

    nvd.nist.gov
  • Red Hat Security DataVendor advisoryCVE-2026-113872

    multer: multer: Denial of Service via aborted request during asynchronous file filtering

    access.redhat.com
  • Snyk Vulnerability DatabasePackage advisorySNYK-JS-MULTER-21431602

    Uncaught Exception

    security.snyk.io

References

Freshness

Last verified in this catalog Nov 3, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 3, 2026
  • GitLab Advisory DatabaseOct 27, 2026
  • Snyk Vulnerability DatabaseOct 25, 2026
  • GitHub Advisory DatabaseOct 24, 2026
  • Red Hat Security DataOct 23, 2026
  • CVE.orgOct 23, 2026
  • NIST NVDOct 22, 2026