CVE-2026-121431

Medium

Description

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.

SeverityMedium

CVSS5.3

Exploit probability—

Product

AzuraCast

PublishedNov 3, 2026

First seenNov 4, 2026

Weakness typeCWE-918Server-side request forgery (SSRF)

How to fix

Update

AzuraCast AzuraCast0.24.0 or later

Vendor advisories

github.com/AzuraCast/AzuraCast/security/advisories/GHSA-qh22-76gf-qwc4

Affected products

Product	Affected versions	Fixed in
AzuraCast AzuraCast	v < 0.24.0	0.24.0

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