AzuraCast up to 0.23.7 AutoDJ QueueBuilder QueueBuilder.php getMediaFromRemoteUrl server-side request forgery

Summaryinfo

A vulnerability was found in AzuraCast up to 0.23.7. It has been declared as problematic. The impacted element is the function getMediaFromRemoteUrl of the file backend/src/Radio/AutoDJ/QueueBuilder.php of the component AutoDJ QueueBuilder. Such manipulation leads to server-side request forgery. This vulnerability is referenced as CVE-2026-100850. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in AzuraCast up to 0.23.7. Affected by this issue is the function getMediaFromRemoteUrl of the file backend/src/Radio/AutoDJ/QueueBuilder.php of the component AutoDJ QueueBuilder. The manipulation with an unknown input leads to a server-side request forgery vulnerability. Using CWE to declare the problem leads to CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. Impacted is confidentiality. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-100850 since 09/27/2026. The exploitation is known to be easy. The attack may be launched remotely. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/27/2026).

By approaching the search of inurl:backend/src/Radio/AutoDJ/QueueBuilder.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• AzuraCast

Version

• 0.23.0
• 0.23.1
• 0.23.2
• 0.23.3
• 0.23.4
• 0.23.5
• 0.23.6
• 0.23.7

Website

• Product: https://github.com/AzuraCast/AzuraCast/

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Once again VulDB remains the best source for vulnerability data.

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