What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-19 · updated 2026-10-26
• Weakness: CWE-918

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 products

• koel: before 9.7.0

References

• https://github.com/koel/koel/commit/1331f335342b405e60ffabdd60f1f398508f996f
• https://github.com/koel/koel/pull/2545
• https://github.com/koel/koel/releases/tag/v9.7.0
• https://github.com/koel/koel/security/advisories/GHSA-w79m-f3jx-779v
• https://github.com/koel/koel/security/advisories/GHSA-w79m-f3jx-779v

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