CVE-2026-76836 AzuraCast through 0.23.8 Liquidsoap Configuration Write via Profile Edit Serialization Group Bypass
Station managers can bypass permission checks to inject malicious Liquidsoap configurations, leading to remote code execution on the server.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-76836?
CVE-2026-76836 is a high-severity missing authorization vulnerability in AzuraCast, published on 24 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2026-76836?
How do I fix CVE-2026-76836?
No fix has been published for CVE-2026-76836 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-76836 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-76836 exists.
Sources
Also known as GHSA-53mh-vf3g-pggg, GHSA-q8wg-3qg7-8pc7.