Vulnerability · Published Aug 19, 2026 · Assigned by GitHub_M
CVE-2026-54492Koel: Authenticated Blind SSRF via Subsonic Podcast Channel Creation
Medium 4.3
In plain English
A medium-severity server-side request forgery in koel from koel. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | phanan/koel | 9.7.0 | GHSA-w79m-f3jx-779v |
Affected products (as reported)
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
References
- https://github.com/koel/koel/security/advisories/GHSA-w79m-f3jx-779v x_refsource_CONFIRM
- https://github.com/koel/koel/pull/2545 x_refsource_MISC
- https://github.com/koel/koel/commit/1331f335342b405e60ffabdd60f1f398508f996f x_refsource_MISC
- https://github.com/koel/koel/releases/tag/v9.7.0 x_refsource_MISC