7.5

CVE-2023-25576: fastify fastify-multipart

CVSS: 7.5v3.1HighModified
AliasesGHSA-hpp2-2cr5-pf6g
Published 14-02-2023Last modified 10-03-2025
Open JSON

Vulnerability summary

CVE-2023-25576 is a high (CVSS 7.5) vulnerability in fastify fastify-multipart. EPSS estimates a 1.46% chance of exploitation in the next 30 days, higher than 73.2% of scored vulnerabilities.

Overall risk
30/100
0100
Medium · default modelHow is this calculated?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
1.46%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 14-02-2023
    PublishedVulnerability first disclosed.
  2. 10-03-2025
    Last modifiedVulnerability information updated.

Description

@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.

CVSS metrics

3 scores · 3 sources · 1 version

EPSS trend

Probability

1.46%

Chance of exploitation in the next 30 days

Percentile

73%

Versus all other CVEs

30-day change

0.00 pp

From 1.46% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.46%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

@fastify1 product
  • multipart< 6.0.1 | ≥ 7.0.0, < 7.4.1
Fastify1 product

2 vendors · 2 products

References

7 links