Server-side Request Forgery (SSRF)

Overview phanan/koel is a personal audio streaming service. Affected versions of this package are vulnerable to Server-side Request Forgery SSRF via the createPodcastChannel.view process. An attacker can cause the server to initiate HTTP requests to internal or private network resources by...

Koel: Authenticated Blind SSRF via Subsonic Podcast Channel Creation

Summary Koel v9.6.0 protects the regular podcast subscription API with SafeUrl, but the Subsonic-compatible createPodcastChannel.view route does not apply the same protection. An authenticated user can supply a private URL and cause Koel to fetch it server-side during podcast parsing. This was...