CVE-2026-54492 - Koel: Authenticated Blind SSRF via Subsonic Podcast Channel Creation
Brief
CVE ID : CVE-2026-54492
Published : Aug. 19, 2026, 8:44 p. m.
- 24 minutes ago
Description : Koel is a free, open-source music streaming solution. Prior to 9.
- 0, the Subsonic-compatible createPodcastChannel. view route accepts an authenticated user's private URL because app/Http/Requests/Subsonic/CreatePodcastChannelRequest. php does not apply the SafeUrl validation used by the regular podcast API. app/Http/Controllers/Subsonic/CreatePodcastChannelController.
php passes the URL to app/Services/Podcast/PodcastService. php, where PodcastService::addPodcast() and createParser() invoke Poddle::fromUrl() during channel creation, causing immediate server-side requests to loopback, Docker bridge, or RFC1918 HTTP destinations. The confirmed impact is blind internal request execution because generic response-body exfiltration was not demonstrated through this route.