---
id: CVE-2026-121431
title: AzuraCast before 0.24.0 SSRF Filter Bypass via Webhook Connectors
summary: >-
  AzuraCast before 0.24.0 contains a server-side request forgery vulnerability
  that allows station users with WebHooks permission to bypass the UserUrlFilter
  guard via the Mastodon, Telegram, GroupMe, and RadioReg connectors. Attackers
  can…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'
cvssSource: cna
cwe:
  - CWE-918
vendor: AzuraCast
product: AzuraCast
affected:
  - AzuraCast < 0.24.0
published: '2026-11-03'
updated: '2026-11-03'
sourceUpdated: '2026-11-03T14:28:25.018Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-121431'
references:
  - url: >-
      https://github.com/AzuraCast/AzuraCast/security/advisories/GHSA-qh22-76gf-qwc4
    label: GitHub Security Advisory (GHSA-qh22-76gf-qwc4)
  - url: >-
      https://www.vulncheck.com/advisories/azuracast-before-0.24.0-ssrf-filter-bypass-via-webhook-connectors
    label: >-
      VulnCheck Advisory: AzuraCast before 0.24.0 SSRF Filter Bypass via Webhook
      Connectors
tags:
  - cve.org
epss: 0.00275
epssPercentile: 0.20056
ingestedAt: '2026-11-05T19:30:42.968Z'
---

## Overview

AzuraCast before 0.24.0 contains a server-side request forgery vulnerability that allows station users with WebHooks permission to bypass the UserUrlFilter guard via the Mastodon, Telegram, GroupMe, and RadioReg connectors. Attackers can set instance_url, api, or webhookurl to internal addresses and trigger the webhook test endpoint to reach loopback, private-network, or cloud-metadata services.

## Affected

- `AzuraCast < 0.24.0`

## Remediation

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