CVE-2026-100854
Received Received - Intake

AzuraCast Metadata Injection Vulnerability Before 0.23.6

Publication date: 2026-09-27

Last updated on: 2026-09-27

Assigner: VulnCheck

Description
AzuraCast before 0.23.6 lacks RequireInternalConnection middleware on the Liquidsoap API endpoint and incorrectly derives the AutoDJ flag from header presence rather than validated value. Users with View station permission can inject arbitrary now-playing metadata, disrupt live broadcasts, and disclose filesystem paths.

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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-2026-100854
EUVD
EUVD-2026-87834

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.

Attack-Flow Graph

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Executive Summary

CVE-2026-100854 is a vulnerability in AzuraCast versions before 0.23.6 where the Liquidsoap API endpoint lacks proper authorization checks. The application fails to enforce internal connection requirements and incorrectly sets the AutoDJ flag based on header presence rather than validated values. This allows users with View station permission to inject arbitrary metadata, disrupt broadcasts, and access filesystem paths.

Detection Guidance

Check AzuraCast logs for unauthorized Liquidsoap API requests or metadata changes. Inspect network traffic for requests to /api/internal/{station_id}/liquidsoap/{action} from non-internal sources. Verify API key validation by examining headers in Liquidsoap API calls.

Impact Analysis
  • Attackers can inject fake now-playing metadata visible to all listeners.
  • Live broadcasts can be disrupted or terminated by unauthorized users.
  • Filesystem paths of media storage may be disclosed.
  • Users with View station permission can execute privileged commands.
Compliance Impact

This vulnerability could lead to unauthorized data exposure or manipulation, potentially violating GDPR (data integrity and confidentiality) or HIPAA (protected health information security). Unauthorized metadata injection or filesystem access may result in non-compliance with these regulations.

Mitigation Strategies

Upgrade AzuraCast to version 0.23.6 or later. Ensure the RequireInternalConnection middleware is applied to the Liquidsoap API endpoint. Validate API keys properly before setting the AutoDJ flag. Restrict View station permissions to trusted users.

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