CVE-2026-100853: AzuraCast On-Demand download endpoint authorization bypass

CVE-2026-100853 · Severity: medium · CVSS 5.9 · Published 2026-09-27

AzuraCast is a web-based radio station management and streaming platform. An authorization bypass in the On-Demand download endpoint allows unauthenticated users to download audio files that station operators intentionally restricted from public access, exposing private, licensed, or unreleased content.

Technologies: AzuraCast. Vendors: AzuraCast.

Quick answers

Is CVE-2026-100853 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-100853 being exploited in the wild.
How severe is CVE-2026-100853?
Medium severity, with a CVSS score of 5.9, published 27 September 2026.
Which products and versions are affected?
AzuraCast before 0.23.8.
Is there a fix for CVE-2026-100853?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-100853 attacked?
It is attacked over the network.
Am I affected by CVE-2026-100853?
Check whether you run AzuraCast at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The public On-Demand download endpoint (GET /api/station/{station_id}/ondemand/download/{media_id}) fails to verify playlist-level access controls and accepts any valid StationMedia.unique_id without checking whether the media belongs to an On-Demand-enabled playlist. An unauthenticated attacker can bypass object-level authorization by directly requesting media files using known media identifiers, circumventing the station's intended access restrictions that should limit downloads to files in playlists with include_in_on_demand=1.

Affected products

  • AzuraCast AzuraCast before 0.23.8

Timeline

  • 2026-09-27: disclosed
  • 2026-07-07: advisory: GitHub Security Advisory GHSA-q9cc-mp52-vrp9 published

References

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