CVE-2026-121431

MEDIUM 5.3

AzuraCast before 0.24.0 SSRF Filter Bypass via Webhook Connectors

CVSS Score

5.3

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-918
Vendor	azuracast
Product	azuracast
Published	Nov 3, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Affected Versions

AzuraCast / AzuraCast

0 < 0.24.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/AzuraCast/AzuraCast/security/advisories/GHSA-qh22-76gf-qwc4 vulncheck.com: https://www.vulncheck.com/advisories/azuracast-before-0.24.0-ssrf-filter-bypass-via-webhook-connectors