CVE-2026-50552

MEDIUM 6.3

Koel: Server-Side Request Forgery (SSRF) in radio station creation due to missing validation bail

CVSS Score

6.3

EPSS Score

0.0%

EPSS Percentile

12th

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.

CWE	CWE-918
Vendor	koel
Product	koel
Published	Jun 12, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Affected Versions

koel / koel

< 9.7.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/koel/koel/security/advisories/GHSA-jr4p-4xjh-fwvw github.com: https://github.com/koel/koel/commit/5f6ce2cefd08f437a269236b677ad971517ccbb6