CVE-2026-100855
Received Received - Intake

AzuraCast Missing Permission Check Exposes Media Files

Publication date: 2026-09-27

Last updated on: 2026-09-27

Assigner: VulnCheck

Description
AzuraCast before 0.23.6 contains a missing permission check vulnerability in the GET /api/station/{station_id}/file/{id}/play endpoint that allows authenticated users to download media files from any station. Attackers can enumerate media files using sequential IDs and exfiltrate the complete media library of stations they lack permissions for.

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Meta Information

Published
2026-09-27
Last Modified
2026-09-27
Generated
2026-09-27
AI Q&A
2026-09-27
EPSS Evaluated
N/A
NVD
CVE-2026-100855
EUVD
EUVD-2026-87820

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
azuracast azuracast to 0.23.6 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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Executive Summary

CVE-2026-100855 is a missing permission check vulnerability in AzuraCast versions before 0.23.6. It affects the GET /api/station/{station_id}/file/{id}/play endpoint, allowing authenticated users to download media files from any station without proper authorization. The issue arises because the endpoint lacks the Permissions middleware check applied to other endpoints.

Detection Guidance

To detect this vulnerability, monitor API logs for unusual GET requests to /api/station/{station_id}/file/{id}/play endpoints with sequential IDs. Check for authenticated users accessing media files outside their assigned stations. Use network traffic analysis to identify unauthorized data exfiltration attempts.

Impact Analysis

An attacker with authenticated access to one station could enumerate media file IDs and download files from other stations they are not authorized to access. This could lead to unauthorized data exfiltration of entire media libraries across multiple stations in a multi-tenant deployment.

Compliance Impact

This vulnerability could lead to unauthorized access and exfiltration of sensitive media files, potentially violating data protection requirements under GDPR and HIPAA. Unauthorized disclosure of personal or health-related data could result in regulatory penalties and loss of compliance certifications.

Mitigation Strategies

Immediately upgrade AzuraCast to version 0.23.6 or later. Apply the patch by adding the Permissions middleware to the /play route in the application's routing configuration. Temporarily restrict API access to trusted networks until the update is applied.

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