{"id":"CVE-2026-100848","summary":"AzuraCast before 0.23.8 Server-Side Request Forgery via Remote Relay URL","details":"AzuraCast (Composer package azuracast/azuracast) before 0.23.8 validates a station's \"Remote Relay\" URL only for URL syntax and an http/https scheme (Utilities\\Urls::parseUserUrl, used by StationRemote::getUrlAsUri) and performs no host or IP address restriction. A user holding only the station-scoped RemoteRelays permission can therefore set a Remote Relay URL pointing at loopback, private-network, or cloud-metadata addresses (e.g. http://127.0.0.1:\u003cport\u003e/ or http://169.254.169.254/latest/meta-data/), and AzuraCast's periodic background Now Playing sync (AbstractRemote::getNowPlayingAsync) will automatically and repeatedly issue HTTP requests to that address, resulting in server-side request forgery against internal resources. This affects the main branch as of commit bcf8754eef3a268ad82c3db4d81f7920c3c28b56 (2026-07-31); no patched version is available at the time of the advisory.","aliases":["GHSA-4h6m-rrxm-7w3m"],"modified":"2026-09-30T03:30:39.776406461Z","published":"2026-09-27T01:28:42.329Z","database_specific":{"cwe_ids":["CWE-918"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100848.json","cna_assigner":"VulnCheck"},"references":[{"type":"ADVISORY","url":"https://github.com/AzuraCast/AzuraCast/security/advisories/GHSA-4h6m-rrxm-7w3m"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100848.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100848"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/azuracast-before-0.23.8-server-side-request-forgery-via-remote-relay-url"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/azuracast/azuracast","events":[{"introduced":"0"},{"fixed":"62a30e5342ee8e571e02c832d7d2e9809bc81fae"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"0.23.8"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"versions":["0.23.7","0.23.6","0.23.5","0.23.4","0.23.3","0.23.2","0.23.1","0.23.0","0.22.1","0.22.0","0.21.0","0.20.4","0.20.3","0.20.2","0.20.1","0.20.0","0.19.7","0.19.6","0.19.5","0.19.4","0.19.3","0.19.2","0.19.1","0.19.0","0.18.5","0.18.3","0.18.2","0.18.1","0.18.0","0.17.7","0.17.6","0.17.5","0.17.4","0.17.3","0.17.2","0.17.1","0.17.0","0.16.1","0.16.0","0.15.2","0.15.1","0.15.0","0.14.1","0.10.2","0.10.1","0.10.0","0.9.9","0.9.8.1","0.9.8","0.9.7.1","0.9.7","0.9.6.5","0.9.6.2","0.9.6.1","0.9.6","0.9.5.1","0.9.5","0.9.4.2","0.9.4.1","0.9.4","0.9.3","0.9.2","0.9.1","0.9.0","0.8.0","0.6.0","0.5.0","0.3.3","0.3.2","0.3.1"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-100848.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N"}]}