Vulnerability-Lookup

CVE-2026-19474 (GCVE-0-2026-19474)

Vulnerability from cvelistv5 – Published: 2026-08-15 13:36 – Updated: 2026-08-17 19:43

Title

@fastify/multipart vulnerable to Denial of Service via temporary file leak on aborted upload

Summary

@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.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-17 19:43 UTC

CWE

CWE-459 - Incomplete Cleanup
CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

openjs redhat root

References

2 references

URL	Tags
https://github.com/fastify/fastify-multipart/secu…
https://cna.openjsf.org/security-advisories.html

Impacted products

1 product

Vendor	Product	Version	CPE status
@fastify/multipart	@fastify/multipart	Affected: 3.0.0 , < 10.1.1 (semver) Unaffected: 10.1.1 (semver)	guessed

Credits

Hemanth-9087 mcollina UlisesGascon climba03003

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-19474

Vulnerability from fkie_nvd - Published: 2026-08-15 14:17 - Updated: 2026-08-17 20:16

Severity

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

Summary

References

	URL	Tags
	ce714d77-add3-4f53-aff5-83d477b104bb	https://cna.openjsf.org/security-advisories.html
	ce714d77-add3-4f53-aff5-83d477b104bb	https://github.com/fastify/fastify-multipart/security/advisories/GHSA-62qx-hpj5-j6hc

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-19474 (GCVE-0-2026-19474)

FKIE_CVE-2026-19474

Tags

Sightings

Nomenclature