---
cve: "CVE-2026-76836"
severity: "HIGH"
cvss: 8.7
epss: "0.4%"
vendor: "azuracast"
kev: false
exploited: false
published: "2026-08-24 18:17:21"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-10-01T13:49:24+02:00"
---

# CVE-2026-76836

> 8.7 HIGH · 🧪 PoC

## Beschreibung

AzuraCast exposes the Liquidsoap custom configuration fields through an endpoint that does not require the permission guarding them. The backend_config property in backend/src/Entity/Station.php is annotated with GROUP_GENERAL, and PUT /api/station/{station_id}/profile/edit in backend/src/Controller/Api/Stations/ProfileEditController.php deserializes with that group while requiring only StationPermissions::Profile. AbstractArrayEntity::fromArray() then assigns every public property with no field-level permission check, so custom_config_top, custom_config, custom_config_pre_playlists, custom_config_pre_live, custom_config_pre_fade and custom_config_bottom are writable through it. ConfigWriter::writeCustomConfigurationSection() emits those values verbatim into the generated Liquidsoap .liq script, where the process.run() and process.exec() built-ins execute operating system commands when the backend restarts, which the built-in sync task triggers automatically once needs_restart is set. The dedicated endpoint for the same data, PUT /api/station/{id}/liquidsoap-config, requires StationPermissions::Broadcasting, so a station manager holding only the profile permission reaches configuration that the intended boundary reserves for broadcasting operators.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **poc**
  - Automatable: **no**
  - Technical Impact: **total**

## CVSS-Vektor

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

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

## Referenzen

- <https://github.com/AzuraCast/AzuraCast/security/advisories/GHSA-q8wg-3qg7-8pc7>
- <https://github.com/AzuraCast/AzuraCast>
- <https://github.com/AzuraCast/AzuraCast/blob/0.23.8/backend/src/Radio/Backend/Liquidsoap/ConfigWriter.php>
- <https://github.com/AzuraCast/AzuraCast/blob/0.23.8/backend/src/Entity/Station.php>
- <https://www.vulncheck.com/advisories/azuracast-through-liquidsoap-configuration-write-via-profile-edit-serialization-group-bypass>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-76836) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_