CVE-2026-54491 Koel: Incomplete fix for CVE-2026-47260 — systemic SSRF in podcast & radio fetch paths
Authenticated users can exploit SSRF in podcast and radio fetch paths to access internal services or cloud metadata via redirects or DNS rebinding.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-54491?
CVE-2026-54491 is a high-severity server-side request forgery vulnerability in koel, published on 19 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Koel is a free, open-source music streaming solution. Prior to 9.7.1, outbound podcast and radio fetch paths perform a point-in-time App\Helpers\Network::isPublicHost() or isSafeUrl() check without pinning the validated address, and most paths lack redirect-hop validation and do not revalidate every redirect target. PhanAn\Poddle\Poddle::fromUrl(), PodcastService::getStreamableUrl(), PodcastService::isPodcastObsolete(), App\Rules\HasAudioContentType, and App\Rules\SafeUrl can therefore follow an attacker-controlled redirect to an internal address or connect after DNS rebinding changes a public resolution to a private one. These paths are reachable through podcast and radio APIs, including createPodcastChannel, createInternetRadioStation, refreshPodcasts, apiResource podcasts, and radio/stations, allowing an authenticated user to request internal services or cloud metadata and potentially receive parsed or streamed response content. This issue is fixed in version 9.7.1.
Weakness: CWE-918
Which versions are affected by CVE-2026-54491?
2 open source packages ship an affected version, including phanan/koel.
| Package | Affected | Fixed in |
|---|---|---|
phanan/koel Packagist | All versions | 9.7.1 |
phanan/koel Packagist | All versions | 9.7.1 |
How do I fix CVE-2026-54491?
Upgrade phanan/koel to 9.7.1 or later.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-54491 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54491 exists.
Sources
Also known as GHSA-6qvr-wjmv-v8mm.