Koel: Authenticated Blind SSRF via Subsonic Podcast Channel Creation
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-54492
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 6 Nov 2026, 00:01 UTC · Revision 1
Source evidence
Koel: Authenticated Blind SSRF via Subsonic Podcast Channel Creation
core-osv · Original sourcePublished 19 Aug 2026, 20:44 UTC
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.
osv:CVE-2026-54492
Complete source record
{
"id": "ca44c0c00043b37515451d3b71aa19177b5a498ad7cedc1abe1ba1172d143cb0",
"url": "https://osv.dev/vulnerability/CVE-2026-54492",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Koel: Authenticated Blind SSRF via Subsonic Podcast Channel Creation",
"summary": "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.",
"evidence": "osv:CVE-2026-54492",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-54492",
"aliases": [
"CVE-2026-54492",
"GHSA-w79m-f3jx-779v"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/koel/koel",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "8ee1de0f5589ef34d3e3bbb9c9555a5de69eaf06"
},
{
"fixed": "1331f335342b405e60ffabdd60f1f398508f996f"
}
],
"database_specific": {
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{
"range": [
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{
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"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
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},
{
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"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54492.json"
}
}
],
"modified": "2026-10-28T02:30:45.424684904Z",
"provider": "osv",
"references": [
"https://github.com/koel/koel/releases/tag/v9.7.0",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54492.json",
"https://github.com/koel/koel/security/advisories/GHSA-w79m-f3jx-779v",
"https://nvd.nist.gov/vuln/detail/CVE-2026-54492",
"https://github.com/koel/koel/commit/1331f335342b405e60ffabdd60f1f398508f996f",
"https://github.com/koel/koel/pull/2545"
],
"provider_metadata": {
"cwe_ids": [
"CWE-918"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54492.json"
}
},
"related_cves": [
{
"value": "CVE-2026-54492",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 513292,
"published_at": "2026-08-19T20:44:33.09+00:00"
}