TI-2023-10879 Aliases CVE-2023-25576 GHSA-hpp2-2cr5-pf6g

@fastify/multipart vulnerable to DoS due to unlimited number of parts

MEDIUM 42CWE-770Published 2023-02-14 · Updated 2025-03-10

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-770.

Summary

@fastify/multipart is a Fastify plugin to parse the multipart content-type. Prior to versions 7.4.1 and 6.0.1, @fastify/multipart may experience denial of service due to a number of situations in which an unlimited number of parts are accepted. This includes the multipart body parser accepting an unlimited number of file parts, the multipart body parser accepting an unlimited number of field parts, and the multipart body parser accepting an unlimited number of empty parts as field parts. This is fixed in v7.4.1 (for Fastify v4.x) and v6.0.1 (for Fastify v3.x). There are no known workarounds.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.01463 73rd percentileScored 2026-11-07

Fix Fixed fastify-multipart (fastify): 6.0.1, 7.4.1@fastify/multipart (npm): 6.0.1, 7.4.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
fastify	fastify-multipart	before 6.0.1; 7.0.0 to before 7.4.1	6.0.1, 7.4.1	Patch available	CNA
—	@fastify/multipart (npm)	before 6.0.1	6.0.1	Patch available	GHSA-hpp2-2cr5-pf6g
—	@fastify/multipart (npm)	7.0.0 to before 7.4.1	7.4.1	Patch available	GHSA-hpp2-2cr5-pf6g

fastify-multipart Vendorfastify Affected before 6.0.1; 7.0.0 to before 7.4.1 Fixed in 6.0.1, 7.4.1 Patch available CNA
@fastify/multipart (npm) Vendor— Affected before 6.0.1 Fixed in 6.0.1 Patch available GHSA-hpp2-2cr5-pf6g
@fastify/multipart (npm) Vendor— Affected 7.0.0 to before 7.4.1 Fixed in 7.4.1 Patch available GHSA-hpp2-2cr5-pf6g

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:fastify:fastify-multipart::::::fastify::*	before 6.0.1; 7.0.0 to before 7.4.1	Vulnerable	fastify

cpe:2.3:a:fastify:fastify-multipart:*:*:*:*:*:fastify:*:* Versions before 6.0.1; 7.0.0 to before 7.4.1 Vulnerable ·fastify

Remediation

Fix · CNA fastify-multipart (fastify) Fixed in 6.0.1, 7.4.1
Fix · GHSA-hpp2-2cr5-pf6g @fastify/multipart (npm) Fixed in 6.0.1 Advisory →
Fix · GHSA-hpp2-2cr5-pf6g @fastify/multipart (npm) Fixed in 7.4.1 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2023-25576
2026-10-03 Alias added: GHSA-hpp2-2cr5-pf6g

References

Patch 1

https://github.com/fastify/fastify-multipart/commit/85be81bedf5b29cfd9fe3efc30fb5a17173c1297

Advisory 5

Other 1

https://github.com/fastify/fastify-multipart

TI-2026-15210 @fastify/multipart vulnerable to Denial of Service via aborted upload after fileSize limit CVSS 3.1HIGH 7.5
TI-2026-15859 @fastify/multipart vulnerable to Denial of Service via temporary file leak on aborted upload CVSS 3.1HIGH 7.5
TI-2021-06170 Denial of service (DoS) in fastify-multipart CVSS 3.1HIGH 7.5
TI-2020-06554 Uncontrolled resource consumption in fastify-multipart CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences