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

Quick assessment

Affected
koel koel
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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Subsonic兼容的createPodcastChannel.view路由未应用SafeUrl验证，可能导致经过身份验证的攻击者触发服务器端请求到回环地址、Docker桥接或RFC1918 HTTP地址，造成盲内部请求执行。

CVSS 4.3 · Medium EPSS 0.27% · P18

Affected Version Matrix 1

VendorProduct Version RangeStatus
koel koel < 9.7.0 affected
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I. Basic Information for CVE-2026-54492

Vulnerability Information
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Vulnerability Title
Koel: Authenticated Blind SSRF via Subsonic Podcast Channel Creation
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 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/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Subsonic兼容的createPodcastChannel.view路由未应用SafeUrl验证，可能导致经过身份验证的攻击者触发服务器端请求到回环地址、Docker桥接或RFC1918 HTTP地址，造成盲内部请求执行。
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-2026-54492

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III. Intelligence Information for CVE-2026-54492

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Patches & Fixes for CVE-2026-54492 (2)

Vendor Advisories for CVE-2026-54492 (1)

Vendor Pages for CVE-2026-54492 (1)

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

CVE-2026-54493 7.7 HIGH Koel: Authenticated Full-Read SSRF via Subsonic Internet Radio Stations
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

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-54492

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