---
id: CVE-2026-100849
title: AzuraCast is a self-hosted web radio management suite
summary: >-
  AzuraCast is a self-hosted web radio management suite. In AzuraCast before
  0.23.8, the station webhook URL validation in AbstractConnector::getValidUrl()
  (backend/src/Webhook/Connector/AbstractConnector.php), used by the Generic and
  Disc…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N'
cwe:
  - CWE-918
vendor: AzuraCast
product: AzuraCast
affected:
  - AzuraCast < 0.23.8
published: '2026-09-27'
updated: '2026-09-27'
sourceUpdated: '2026-09-27T02:17:23.757'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100849'
references:
  - url: >-
      https://github.com/AzuraCast/AzuraCast/security/advisories/GHSA-3jp3-3wqw-jvw4
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/azuracast-before-0.23.8-ssrf-filter-bypass-via-hostname-and-private-ips
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-27T02:41:45.576Z'
---

## Overview

AzuraCast is a self-hosted web radio management suite. In AzuraCast before 0.23.8, the station webhook URL validation in AbstractConnector::getValidUrl() (backend/src/Webhook/Connector/AbstractConnector.php), used by the Generic and Discord webhook connectors, rejects only URLs whose host is a literal link-local IP address (169.254.0.0/16 or fe80::/10). Loopback addresses and RFC1918 private ranges are not rejected, and any non-literal-IP hostname causes the IP parsing call to throw, which skips the check entirely. A user holding only the station-scoped WebHooks permission can therefore configure a webhook pointing at an internal, loopback, or private-network target and cause the server to issue an outbound HTTP POST containing the station's Now Playing data, resulting in server-side request forgery. The PUT /station/{id}/webhook/{id}/test endpoint allows the same low-privileged user to trigger the request on demand. At the time of the advisory no patched version was available.

## Remediation

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