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CVE-2026-54491— Koel: Incomplete fix for CVE-2026-47260 — systemic SSRF in podcast & radio fetch paths

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 9.7.1之前版本存在服务端请求伪造漏洞，该漏洞源于出站播客和广播获取路径在验证地址时未固定地址且缺少重定向跳转验证，可能导致经过身份验证的用户请求内部服务或云元数据并接收解析或流式响应内容。

CVSS 7.1 · High EPSS 0.24% · P16

Affected Version Matrix 1

VendorProduct Version RangeStatus
koel koel < 9.7.1 affected
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I. Basic Information for CVE-2026-54491

Vulnerability Information
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Vulnerability Title
Koel: Incomplete fix for CVE-2026-47260 — systemic SSRF in podcast & radio fetch paths
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/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 9.7.1之前版本存在服务端请求伪造漏洞，该漏洞源于出站播客和广播获取路径在验证地址时未固定地址且缺少重定向跳转验证，可能导致经过身份验证的用户请求内部服务或云元数据并接收解析或流式响应内容。
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 < 9.7.1 -

II. Public POCs for CVE-2026-54491

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7871 chars
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III. Intelligence Information for CVE-2026-54491

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Patches & Fixes for CVE-2026-54491 (3)

Vendor Advisories for CVE-2026-54491 (1)

Other References for CVE-2026-54491 (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-2026-54494 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-2026-54491

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