---
cve: "CVE-2025-32442"
severity: "HIGH"
cvss: 7.5
epss: "71%"
vendor: "fastify"
kev: false
exploited: false
published: "2025-04-18 16:15:23"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T11:49:36+02:00"
---

# CVE-2025-32442

> 7.5 HIGH · 🧪 PoC

## Beschreibung

Fastify is a fast and low overhead web framework, for Node.js. In versions 5.0.0 to 5.3.0 as well as version 4.29.0, applications that specify different validation strategies for different content types have a possibility to bypass validation by providing a _slightly altered_ content type such as with different casing or altered whitespacing before `;`. This was patched in v5.3.1, but the initial patch did not cover all problems. This has been fully patched in v5.3.2 and v4.29.1. A workaround involves not specifying individual content types in the schema.

## CVSS-Vektor

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

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 32f7e1eb97b638bad3ff8b80948e5b2c07d1b8b5 (Commit)
- 436da4c06dfbbb8c24adee3a64de0c51e4f47418 (Commit)

## Referenzen

- <https://github.com/fastify/fastify/security/advisories/GHSA-mg2h-6x62-wpwc>
- <https://github.com/fastify/fastify/commit/436da4c06dfbbb8c24adee3a64de0c51e4f47418>
- <https://github.com/fastify/fastify/commit/f3d2bcb3963cd570a582e5d39aab01a9ae692fe4>
- <https://hackerone.com/reports/3087928>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-32442) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_