GHSA-44fp-w29j-9vj5

Suggest an improvement
Source
https://github.com/advisories/GHSA-44fp-w29j-9vj5
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/05/GHSA-44fp-w29j-9vj5/GHSA-44fp-w29j-9vj5.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-44fp-w29j-9vj5
Aliases
Published
2025-05-19T22:04:17Z
Modified
2025-05-19T22:42:04.464492Z
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 memory leaks from unclosed streams
Details

Impact

Multer <2.0.0 is vulnerable to a resource exhaustion and memory leak issue due to improper stream handling. When the HTTP request stream emits an error, the internal busboy stream is not closed, violating Node.js stream safety guidance.

This leads to unclosed streams accumulating over time, consuming memory and file descriptors. Under sustained or repeated failure conditions, this can result in denial of service, requiring manual server restarts to recover. All users of Multer handling file uploads are potentially impacted.

Patches

Users should upgrade to 2.0.0

Workarounds

None

References

  • https://github.com/expressjs/multer/pull/1120
  • https://github.com/expressjs/multer/commit/2c8505f207d923dd8de13a9f93a4563e59933665
Database specific 
{
    "nvd_published_at": "2025-05-19T20:15:25Z",
    "cwe_ids": [
        "CWE-401"
    ],
    "severity": "HIGH",
    "github_reviewed": true,
    "github_reviewed_at": "2025-05-19T22:04:17Z"
}
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
0Unknown introduced version / All previous versions are affected
Fixed
2.0.0