Server-Side Request Forgery Vulnerability in AzuraCast by AzuraCast
CVE-2026-121431

6.9MEDIUM

Key Information:

Vendor

Azuracast

Status
Azuracast
Vendor
CVE Published:
3 November 2026

What is CVE-2026-121431?

A server-side request forgery vulnerability exists in AzuraCast versions prior to 0.24.0, affecting users with WebHooks permissions. This flaw allows attackers to bypass the UserUrlFilter guard by exploiting the Mastodon, Telegram, GroupMe, and RadioReg connectors. By manipulating parameters such as instance_url, api, or webhookurl, attackers can direct requests to internal addresses, triggering the webhook test endpoint and compromising access to loopback, private-network, or cloud-metadata services.

Affected Version(s)

AzuraCast 0 < 0.24.0

AzuraCast 0.24.0

References

https://github.com/AzuraCast/AzuraCast/security/advisorie...
vendor-advisory
https://www.vulncheck.com/advisories/azuracast-before-0.2...
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.