CVE-2026-100850 AzuraCast before 0.23.8 SSRF and Local File Read via Remote Playlist
Authenticated users can exploit SSRF and local file read via remote playlists to disclose sensitive host files and internal network data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-100850?
CVE-2026-100850 is a medium-severity server-side request forgery vulnerability in AzuraCast, published on 27 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
AzuraCast before 0.23.8 contains a server-side request forgery and local file read vulnerability in the AutoDJ remote playlist fetch (backend/src/Radio/AutoDJ/QueueBuilder.php, getMediaFromRemoteUrl()). A user with the station Media permission can create or update a playlist with source=remote_url and remote_type=playlist whose remote_url points at a file:// path or an internal/loopback/link-local HTTP endpoint. When AutoDJ builds the queue, the backend passes the user-supplied URL directly to file_get_contents() with no scheme allowlist and no private/loopback/metadata IP policy (PHP allow_url_fopen is enabled by default, including in the Docker image). Lines from the fetched resource are parsed as M3U/PLS entries, stored in StationQueue.autodj_custom_uri, and returned by GET /api/station/{station_id}/queue to any user with the Broadcasting permission, disclosing host files readable by the web container (for example /etc/passwd or the application .env) and the bodies of non-blind internal HTTP requests. No patched version was available at the time of publication.
Weakness: CWE-918
Which versions are affected by CVE-2026-100850?
How do I fix CVE-2026-100850?
No fix has been published for CVE-2026-100850 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-100850 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-100850 exists.
Sources
Also known as GHSA-r4xq-h58x-54m9, GHSA-rrjx-wrhf-8v47.