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CVE-2026-54493— Koel: Authenticated Full-Read SSRF via Subsonic Internet Radio Stations

Quick assessment

Affected
koel koel
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Koel是德国Koel社区开源的一款个人音乐流媒体服务软件。 Koel 9.7.0之前版本存在服务端请求伪造漏洞，该漏洞源于对streamUrl参数未进行SafeUrl和HasAudioContentType检查，可能导致服务端请求伪造，允许访问回环地址、RFC1918、Docker桥接或其他内部HTTP服务。

CVSS 7.7 · High EPSS 0.26% · P18

Affected Version Matrix 1

VendorProduct Version RangeStatus
koel koel < 9.7.0 affected
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I. Basic Information for CVE-2026-54493

Vulnerability Information
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Vulnerability Title
Koel: Authenticated Full-Read SSRF via Subsonic Internet Radio Stations
Source: CVE Program / CVE List V5
Vulnerability Description
Koel is a free, open-source music streaming solution. Prior to 9.7.0, the Subsonic-compatible createInternetRadioStation.view and updateInternetRadioStation.view routes accept an authenticated user's streamUrl without the SafeUrl and HasAudioContentType checks used by the regular radio API. app/Http/Requests/Subsonic/CreateInternetRadioStationRequest.php and app/Http/Requests/Subsonic/UpdateInternetRadioStationRequest.php pass the stored URL through app/Services/RadioService.php to app/Services/Radio/RadioStreamProxy.php, where RadioStreamProxy::openStream() calls fopen($url, 'r', false, $context). Streaming /radio/stream/{id} returns the upstream response body, allowing access to loopback, RFC1918, Docker bridge, metadata, or other internal HTTP services reachable from the Koel server. This issue is fixed in version 9.7.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Koel 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Koel是德国Koel社区开源的一款个人音乐流媒体服务软件。 Koel 9.7.0之前版本存在服务端请求伪造漏洞，该漏洞源于对streamUrl参数未进行SafeUrl和HasAudioContentType检查，可能导致服务端请求伪造，允许访问回环地址、RFC1918、Docker桥接或其他内部HTTP服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
koel koel < 9.7.0 -

II. Public POCs for CVE-2026-54493

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8040 chars
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Trigger conditions & impact
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Exploit chain & mitigation
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III. Intelligence Information for CVE-2026-54493

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Patches & Fixes for CVE-2026-54493 (2)

Vendor Advisories for CVE-2026-54493 (1)

Vendor Pages for CVE-2026-54493 (1)

Same Patch Batch · koel · 2026-08-19 · 4 CVEs total

CVE-2026-54491 7.1 HIGH Koel: Incomplete fix for CVE-2026-47260 — systemic SSRF in podcast & radio fetch paths
CVE-2026-54494 5.3 MEDIUM Koel: Full-read SSRF via podcast enclosure URL: isPublicHost() filter_var guard does not r
CVE-2026-54492 4.3 MEDIUM Koel: Authenticated Blind SSRF via Subsonic Podcast Channel Creation

IV. Related Vulnerabilities

Same product: koel
Same vendor: koel
Same weakness: CWE-918

V. Comments for CVE-2026-54493

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