---
cve: "CVE-2026-27955"
severity: "MEDIUM"
cvss: 6.6
epss: "22%"
vendor: "coollabsio"
kev: false
exploited: false
published: "2026-06-30 15:16:52"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-10T23:09:11+02:00"
---

# CVE-2026-27955

> 6.6 MEDIUM · 🧪 PoC

## Beschreibung

Coolify is an open-source and self-hostable tool for managing servers, applications, and databases. Prior to 4.0.0-beta.464, the executeInDocker() helper wraps commands in bash -c '{$command}' without escaping single quotes. User-controlled docker_compose_custom_build_command and docker_compose_custom_start_command fields are interpolated directly, allowing a single quote to break out of the bash -c argument and execute commands on the managed server host (outside the intended Docker container context). This vulnerability is fixed in 4.0.0-beta.464.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- e1f940dc229cd10538dac0e6f8d58b127cf424bc (Commit)

## Referenzen

- <https://github.com/coollabsio/coolify/security/advisories/GHSA-6h8g-wpxp-cq98>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-27955) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_