---
cve: "CVE-2025-66415"
severity: "MEDIUM"
cvss: 6.9
epss: "18%"
vendor: "fastify"
kev: false
exploited: false
published: "2025-12-01 23:15:54"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T06:34:29+02:00"
---

# CVE-2025-66415

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

fastify-reply-from is a Fastify plugin to forward the current HTTP request to another server. Prior to 12.5.0, by crafting a malicious URL, an attacker could access routes that are not allowed, even though the reply.from is defined for specific routes in @fastify/reply-from. This vulnerability is fixed in 12.5.0.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 4d9795cd5b57a36756d37b7f036eae369f69fa66 (Commit)

## Referenzen

- <https://github.com/fastify/fastify-reply-from/security/advisories/GHSA-2q7r-29rg-6m5h>
- <https://github.com/fastify/fastify-reply-from/commit/4d9795cd5b57a36756d37b7f036eae369f69fa66>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2025-66415) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_