GHSA-q7qp-rjg7-q26m

Suggest an improvement
Source
https://github.com/advisories/GHSA-q7qp-rjg7-q26m
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-q7qp-rjg7-q26m/GHSA-q7qp-rjg7-q26m.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-q7qp-rjg7-q26m
Aliases
  • CVE-2026-113872
Published
2026-10-23T22:08:22Z
Modified
2026-10-23T22:15:04Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
multer vulnerable to Denial of Service via a pending asynchronous fileFilter after request teardown
Details

Impact

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 Node raises as an unhandled 'error' event, and the process exits. A single unauthenticated request is enough, so any application using multer with an asynchronous fileFilter is affected, regardless of storage engine. Uploads using a synchronous fileFilter are not affected.

Patches

Users should upgrade to multer 2.5.0 or later.

Workarounds

Use a synchronous fileFilter.

Database specific 
{
    "cwe_ids":  [
        "CWE-248",
        "CWE-404"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-10-23T22:08:22Z",
    "nvd_published_at":  "2026-10-22T15:17:05Z",
    "severity":  "HIGH"
}
References

Affected packages

npm / multer

Package

Name
multer
View open source insights on deps.dev
Purl
pkg:npm/multer

Affected ranges

Type
SEMVER
Events
Introduced
2.0.0
Fixed
2.5.0

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-q7qp-rjg7-q26m/GHSA-q7qp-rjg7-q26m.json"