---
cve: "CVE-2026-34198"
severity: "MEDIUM"
cvss: 5.3
epss: "14%"
vendor: "coollabsio"
kev: false
exploited: false
published: "2026-07-07 03:01:19"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-10T19:12:51+02:00"
---

# CVE-2026-34198

> 5.3 MEDIUM · 🧪 PoC

## Beschreibung

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.471, the TrustProxies middleware trusts all proxies ($proxies = '*'), accepting X-Forwarded-Host from any source. The TrustHosts middleware, intended to prevent host header attacks, has a circular caching dependency that prevents it from ever validating hosts. When a password reset is requested, the ResetPassword notification generates the reset URL using url(route(..., false)), which derives the host from the (spoofable) request. An unauthenticated attacker can trigger a password reset email containing a link pointing to an attacker-controlled domain, enabling token theft and account takeover. This issue is fixed in version 4.0.0-beta.471.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 98569e4edbfc316877c9e0d27ea89fab3c49e3bd (Commit)
- 914d7e0b50505bc1fd56c34974fca09ad354e92a (Commit)

## Referenzen

- <https://github.com/coollabsio/coolify/security/advisories/GHSA-cgj8-7m5q-x5gv>
- <https://github.com/coollabsio/coolify/pull/9193>
- <https://github.com/coollabsio/coolify/commit/98569e4edbfc316877c9e0d27ea89fab3c49e3bd>
- <https://github.com/coollabsio/coolify/releases/tag/v4.0.0-beta.471>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-34198) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_