CVE-2026-54493

CVE-2026-54493 · Koel: Authenticated Full-Read SSRF via Subsonic Internet Radio Stations

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Koel is a free, open-source music streaming solution. Prior to 9.7.0, the Subsonic-compatible createInternetRadioStation.view and updateInternetRadioStation.view routes accept an authenticated user's streamUrl without the SafeUrl and HasAudioContentType checks used by the regular radio API. app/Http/Requests/Subsonic/CreateInternetRadioStationRequest.php and app/Http/Requests/Subsonic/UpdateInternetRadioStationRequest.php pass the stored URL through app/Services/RadioService.php to app/Services/Radio/RadioStreamProxy.php, where RadioStreamProxy::openStream() calls fopen($url, 'r', false, $context). Streaming /radio/stream/{id} returns the upstream response body, allowing access to loopback, RFC1918, Docker bridge, metadata, or other internal HTTP services reachable from the Koel server. This issue is fixed in version 9.7.0.

CVSS 7.7 · Hoch · EPSS 0,4% · Korrektur verfügbar

Veröffentlicht

2026-08-19T20:46:50.890Z

Aktualisiert

2026-08-21T18:13:02.201Z

Technologie-Stack: php

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