{"id":"CVE-2026-54494","summary":"Koel: Full-read SSRF via podcast enclosure URL: isPublicHost() filter_var guard does not reject NAT64 (64:ff9b::/96) or 6to4 (2002::/16) IPv6-transition wrappers of internal IPv4","details":"Koel is a free, open-source music streaming solution. Prior to 9.7.1, App\\Helpers\\Network::isPublicHost() uses filter_var() with FILTER_FLAG_NO_PRIV_RANGE and FILTER_FLAG_NO_RES_RANGE, which treats NAT64 64:ff9b::/96 and 6to4 2002::/16 wrappers of private, loopback, or link-local IPv4 addresses as public. An authenticated user can place such an address in a podcast RSS \u003cenclosure url\u003e and reach app/Values/Podcast/EpisodePlayable.php through EpisodePlayable::createForEpisode(), where isSafeUrl() accepts the target and Http::sink($file)-\u003eget($url) fetches it. On a host with NAT64 or 6to4 routing, Koel can request internal services or cloud metadata and return the response body to the user. This issue is fixed in version 9.7.1","aliases":["GHSA-rjg7-r26h-cfp2"],"modified":"2026-08-21T03:46:50.217659466Z","published":"2026-08-19T20:46:01.824Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54494.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-918"]},"references":[{"type":"WEB","url":"https://github.com/koel/koel/releases/tag/v9.7.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54494.json"},{"type":"ADVISORY","url":"https://github.com/koel/koel/security/advisories/GHSA-rjg7-r26h-cfp2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-54494"},{"type":"FIX","url":"https://github.com/koel/koel/commit/5f6ce2cefd08f437a269236b677ad971517ccbb6"},{"type":"FIX","url":"https://github.com/koel/koel/pull/2549"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/koel/koel","events":[{"introduced":"0"},{"fixed":"5f6ce2cefd08f437a269236b677ad971517ccbb6"},{"fixed":"4292d9844faed1e0f78d62be388152fd981c7437"}],"database_specific":{"source":["AFFECTED_FIELD","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"9.7.1"}]}}],"versions":["v9.7.0","v9.6.0","v9.5.0","v9.4.1","v9.4.0","v9.3.6","v9.3.5","v9.3.4","v9.3.3","v9.3.2","v9.3.1","v9.3.0","v9.2.1","v9.2.0","v9.1.2","v9.1.1","v9.1.0","v9.0.0","v8.3.1","latest","v8.3.0","v8.2.0","v8.1.0","v8.0.0","v7.15.1","v7.15.0","v7.14.0","v7.13.0","v7.12.0","v7.11.0","v7.10.4","v7.10.3","v7.10.2","v7.10.1","v7.10.0","v7.9.0","v7.8.1","v7.8.0","v7.7.1","v7.7.0","v7.6.3","v7.6.2","v7.6.1","v7.6.0","v7.5.2","v7.5.1","v7.5.0","v7.4.2","v7.4.1","v7.4.0","v7.3.1","v7.3.0","v7.2.2","v7.2.1","v7.2.0","v7.1.0","v7.0.12","v7.0.11","v7.0.10","v7.0.9","v7.0.8","v7.0.7","v7.0.6","v7.0.5","v7.0.4","v7.0.3","v7.0.2","v7.0.1","v7.0.0","v6.12.1","v6.12.0","v6.11.5","v6.11.4","v6.11.3","v6.11.2","v6.11.1","v6.11.0","v6.10.0","v6.9.0","v6.8.5","v6.8.4","v6.8.3","v6.8.2","v6.8.1","v6.8.0","v6.7.5","v6.7.3","v6.7.2","v6.7.1","v6.7.0","v6.6.0","v6.5.3","v6.5.2","v6.5.1","v6.5.0","v6.4.3","v6.4.2","v6.4.1","v6.4.0","v6.3.0","v6.2.2","v6.2.1","v6.2.0","v6.1.0","v6.0.6","v6.0.5","v6.0.4","v6.0.3","v6.0.2","v6.0.1","v6.0.0","v5.1.14","v5.1.13","v5.1.12","v5.1.11","v5.1.10","v5.1.9","v5.1.8","v5.1.7","v5.1.6","v5.1.5","v5.1.4","v5.1.3","v5.1.2","v5.1.1","v5.1.0","v5.0.2","v5.0.1","v5.0.0","v4.4.0","v4.3.1","v4.3.0","v4.2.2","v4.2.1","v4.2.0","v4.1.1","v4.1.0","v4.0.0","v3.7.2","v3.7.1","v3.7.0","v3.6.2","v3.6.1","v3.6.0","v3.5.5","v3.5.4","v3.5.3","v3.5.2","v3.5.1","v3.5.0","v3.4.0","v3.3.1","v3.3.0","v3.2.0","v3.1.1","v3.1.0","v3.0.1","v3.0.0","v2.2.0","v2.1.0","v2.0.2","v2.0.1","v2.0.0","1.0.0-beta"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54494.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:L/VI:L/VA:N/SC:N/SI:N/SA:N"}]}