EUVD-2026-327287

fkie_cve-2026-50552

Koel is a free, open-source music streaming solution. Prior to version 9.7.1, Koel contains a Server-Side Request Forgery (SSRF) vulnerability in the radio station creation endpoint (POST /api/radio/stations). The url field validation rules are declared without the bail keyword, so the HasAudioContentType rule — which issues HTTP requests to the supplied URL — still executes even after the SafeUrl rule has rejected the URL as pointing to a private/reserved address. Any authenticated, non-admin user can therefore coerce the server into making HEAD/GET requests to arbitrary internal hosts. This issue has been patched in version 9.7.1.

GHSA-jr4p-4xjh-fwvw — Koel: Server-Side Request Forgery (SSRF) in radio station creation due to missing validation bail

Affected: Packagist: phanan/koel

Summary

Koel v9.5.0 contains a Server-Side Request Forgery (SSRF) vulnerability in the radio station creation endpoint (POST /api/radio/stations). The url field validation rules are declared without the bail keyword, so the HasAudioContentType rule — which issues HTTP requests to the supplied URL — still executes even after the SafeUrl rule has rejected the URL as pointing to a private/reserved address. Any authenticated, non-admin user can therefore coerce the server into making HEAD/GET requests to arbitrary internal hosts.

This is a blind SSRF: the response body is never returned to the client, but the two distinct validation error messages form a reliable internal-network reachability oracle.

Severity

Medium — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N (5.4)

Authenticated (low-privilege) actor; blind SSRF (no response-body exfiltration). Confidentiality (L) reflects the internal reachability oracle; Integrity (L) reflects state-changing internal endpoints that act on GET/HEAD.

Affected Component

- Version: Koel v9.5.0 (latest release, HEAD b2e9a34, verified 2026-05-30) - Endpoint: POST /api/radio/stations - Files: - app/Http/Requests/API/Radio/RadioStationStoreRequest.php (missing bail) - app/Rules/HasAudioContentType.php (unguarded HTTP fetch)

Root Cause

app/Http/Requests/API/Radio/RadioStationStoreRequest.php (lines 25-34):

'url' => [ 'required', 'url', Rule::unique('radio_stations')->where(function ($query) { ret…

Most recent entries from all

EUVD-2026-327287

fkie_cve-2026-50552

GHSA-jr4p-4xjh-fwvw — Koel: Server-Side Request Forgery (SSRF) in radio station creation due to missing validation bail