---
id: CVE-2026-54494
title: 'Koel is a free, open-source music streaming solution'
summary: >-
  Koel is a free, open-source music streaming solution. Prior to 9.7.1,
  App\Helpers\Network::isPublicHost() uses filter_var() with
  FILTER_FLAG_NO_PRIV_RANGE and FILTER_FLAG_NO_RES_RANGE, which treats NAT64
  64:ff9b::/96 and 6to4 2002::/16 w…
severity: medium
cwe:
  - CWE-918
vendor: phanan
product: phanan/koel
affected:
  - phanan/koel <= 9.7.0
patched:
  - phanan/koel 9.7.1
published: '2026-08-19'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:15:59.613'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-54494'
references:
  - url: >-
      https://github.com/koel/koel/commit/5f6ce2cefd08f437a269236b677ad971517ccbb6
    label: security-advisories@github.com
  - url: 'https://github.com/koel/koel/pull/2549'
    label: security-advisories@github.com
  - url: 'https://github.com/koel/koel/releases/tag/v9.7.1'
    label: security-advisories@github.com
  - url: 'https://github.com/koel/koel/security/advisories/GHSA-rjg7-r26h-cfp2'
    label: security-advisories@github.com
  - url: 'https://github.com/koel/koel/security/advisories/GHSA-rjg7-r26h-cfp2'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://github.com/advisories/GHSA-rjg7-r26h-cfp2'
tags:
  - nvd
  - ghsa
  - composer
epss: 0.00427
epssPercentile: 0.34364
aliases:
  - GHSA-rjg7-r26h-cfp2
ecosystem: composer
ingestedAt: '2026-07-15T18:45:16.892Z'
---

## Overview

Koel is a free, open-source music streaming solution. Prior to 9.7.1, App\Helpers\Network::isPublicHost() uses filter_var() with FILTER_FLAG_NO_PRIV_RANGE and FILTER_FLAG_NO_RES_RANGE, which treats NAT64 64:ff9b::/96 and 6to4 2002::/16 wrappers of private, loopback, or link-local IPv4 addresses as public. An authenticated user can place such an address in a podcast RSS <enclosure url> and reach app/Values/Podcast/EpisodePlayable.php through EpisodePlayable::createForEpisode(), where isSafeUrl() accepts the target and Http::sink($file)->get($url) fetches it. On a host with NAT64 or 6to4 routing, Koel can request internal services or cloud metadata and return the response body to the user. This issue is fixed in version 9.7.1

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-54494)

Affected packages:

- `phanan/koel <= 9.7.0`

Patched in:

- `phanan/koel 9.7.1`

Source: https://github.com/advisories/GHSA-rjg7-r26h-cfp2