Description
@fastify/multipart is a multipart form-data parser for Fastify. In versions from 3.0.0 up to but not including 10.1.1, request.saveRequestFiles() can leave completed temporary files on disk when a client disconnects while the parser is advancing between multipart parts. The iterator rejection that occurs between parts falls outside the per-file cleanup path, so an earlier completed file is never removed. An unauthenticated client can repeat this to cause persistent, linear disk consumption, leading to denial of service. This is an incomplete-fix variant of CVE-2025-24033. The issue is fixed in @fastify/multipart 10.1.1. Users should upgrade to 10.1.1.
Published: 2026-08-15
Score: 7.5 High
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

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Tracking

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Advisories

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History

Sat, 15 Aug 2026 13:45:00 +0000

Type Values Removed Values Added
Description @fastify/multipart is a multipart form-data parser for Fastify. In versions from 3.0.0 up to but not including 10.1.1, request.saveRequestFiles() can leave completed temporary files on disk when a client disconnects while the parser is advancing between multipart parts. The iterator rejection that occurs between parts falls outside the per-file cleanup path, so an earlier completed file is never removed. An unauthenticated client can repeat this to cause persistent, linear disk consumption, leading to denial of service. This is an incomplete-fix variant of CVE-2025-24033. The issue is fixed in @fastify/multipart 10.1.1. Users should upgrade to 10.1.1.
Title @fastify/multipart vulnerable to Denial of Service via temporary file leak on aborted upload
Weaknesses CWE-459
CWE-770
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: openjs

Published:

Updated: 2026-08-15T13:36:13.037Z

Reserved: 2026-08-10T14:46:05.622Z

Link: CVE-2026-19474

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-15T14:17:07.710

Modified: 2026-08-15T14:17:07.710

Link: CVE-2026-19474

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-15T15:15:03Z

Weaknesses
  • CWE-459

    Incomplete Cleanup

  • CWE-770

    Allocation of Resources Without Limits or Throttling