SSRF in Azuracast
CVE-2026-121431
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.
Vulnerability class: SSRF (Server-Side Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/AzuraCast/AzuraCast/security/advisories/GHSA-qh22-76gf-qwc4 (vendor-advisory)
- www.vulncheck.com/advisories/azuracast-before-0.24.0-ssrf-filter-bypass-via-web… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-121431?
- CVE-2026-121431 is a medium-severity vulnerability in Azuracast, classified under Server-Side Request Forgery (SSRF). CVSS score: 5.3/10. Published 2026-11-03.
- How severe is CVE-2026-121431?
- Medium severity. CVSS v3 base score is 5.3 out of 10.