{"id":"CVE-2026-100849","title":"AzuraCast is a self-hosted web radio management suite","summary":"AzuraCast is a self-hosted web radio management suite. In AzuraCast before 0.23.8, the station webhook URL validation in AbstractConnector::getValidUrl() (backend/src/Webhook/Connector/AbstractConnector.php), used by the Generic and Disc…","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N","cwe":["CWE-918"],"vendor":"AzuraCast","product":"AzuraCast","affected":["AzuraCast < 0.23.8"],"published":"2026-09-27","updated":"2026-09-28","sourceUpdated":"2026-09-28T21:02:16.150","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-100849","references":[{"url":"https://github.com/AzuraCast/AzuraCast/security/advisories/GHSA-3jp3-3wqw-jvw4","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/azuracast-before-0.23.8-ssrf-filter-bypass-via-hostname-and-private-ips","label":"disclosure@vulncheck.com"},{"url":"https://github.com/AzuraCast/AzuraCast/security/advisories/GHSA-3jp3-3wqw-jvw4","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-28T13:57:11.719666Z"},"ingestedAt":"2026-09-27T02:41:45.576Z","epss":0.00295,"epssPercentile":0.22052,"slug":"CVE-2026-100849","body":"## Overview\n\nAzuraCast is a self-hosted web radio management suite. In AzuraCast before 0.23.8, the station webhook URL validation in AbstractConnector::getValidUrl() (backend/src/Webhook/Connector/AbstractConnector.php), used by the Generic and Discord webhook connectors, rejects only URLs whose host is a literal link-local IP address (169.254.0.0/16 or fe80::/10). Loopback addresses and RFC1918 private ranges are not rejected, and any non-literal-IP hostname causes the IP parsing call to throw, which skips the check entirely. A user holding only the station-scoped WebHooks permission can therefore configure a webhook pointing at an internal, loopback, or private-network target and cause the server to issue an outbound HTTP POST containing the station's Now Playing data, resulting in server-side request forgery. The PUT /station/{id}/webhook/{id}/test endpoint allows the same low-privileged user to trigger the request on demand. At the time of the advisory no patched version was available.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":51,"depthScoreParts":{"impact":39.1,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":211940,"id":"CVE-2026-100849","ts":1790604795198,"field":"exploit_available","old":"false","new":"true"}]}