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Vulnerability record · CVE-2026-54491 · published 19 August 2026

CVE-2026-54491: Server-side request forgery (SSRF) vulnerability

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.

7.1 CVSS 3.1 High EPSS 0.38% · top 70.2% CWE-918 · Server-side request forgery (SSRF) Deferred
7.1CVSS 3.1 base score
0.38%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
7References
9 Sep 2026Last modified by NVD

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.

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

References

LinkTags
https://github.com/koel/koel/commit/5f6ce2cefd08f437a269236b677ad971517ccbb6
https://github.com/koel/koel/commit/c264a3d52513a83b21e1cc3a20e895caea97fc4a
https://github.com/koel/koel/pull/2546
https://github.com/koel/koel/pull/2549
https://github.com/koel/koel/releases/tag/v9.7.1
https://github.com/koel/koel/security/advisories/GHSA-6qvr-wjmv-v8mm
https://github.com/koel/koel/security/advisories/GHSA-6qvr-wjmv-v8mm

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Source: NIST National Vulnerability Database (record CVE-2026-54491), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.