{"id":"CVE-2026-107449","aliases":["EUVD-2026-94738","GHSA-hrj5-rw8j-34qj"],"status":"published","title":"linuxserver Heimdall through 2.8.3 applies its SafeUrlFetcher SSRF protection mechanism only to...","description":"linuxserver Heimdall through 2.8.3 applies its SafeUrlFetcher SSRF protection mechanism only to ItemController; the enhanced-application test and live-stats requests occur via SupportedApps::execute(), a GuzzleHttp client that lacks IP address restrictions. In some realistic installations, the POST /test_config (and GET /get_stats) endpoints are accessible through CSRF, and thus an unauthenticated attacker can force the server to send requests to arbitrary internal hosts and ports (including 169.254.169.254) and read a status/port oracle in addition to partial response data.","severity":{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00162,"percentile":0.05499,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-918"],"published":"2026-10-08T04:28:17Z","modified":"2026-10-28T02:31:04Z","products":[{"vendor":"dadrus","product":"heimdall"},{"vendor":"linuxserver","product":"heimdall"}],"references":[{"url":"https://github.com/kashishtopi/heimdall-unauth-ssrf","tags":["exploit","technical-description","evidence"]},{"url":"https://github.com/linuxserver/Heimdall/blob/9ad5864a80d7025db1e6eab8eb2981c165b0ddff/app/SupportedApps.php","tags":["product","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-107449","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-hrj5-rw8j-34qj"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/107xxx/CVE-2026-107449.json","tags":["advisory"]},{"url":"https://github.com/linuxserver/Heimdall","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-107449","description":"linuxserver Heimdall through 2.8.3 applies its SafeUrlFetcher SSRF protection mechanism only to ItemController; the enhanced-application test and live-stats requests occur via SupportedApps::execute(), a GuzzleHttp client that lacks IP address restrictions. In some realistic installations, the POST /test_config (and GET /get_stats) endpoints are accessible through CSRF, and thus an unauthenticated attacker can force the server to send requests to arbitrary internal hosts and ports (including 169.254.169.254) and read a status/port oracle in addition to partial response data.","status":"published","published":"2026-10-08T04:28:17.619Z","modified":"2026-10-08T17:35:00.37Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"low","assessor":"cna"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T13:45:14.072357Z"}],"euvd":[{"id":"EUVD-2026-94738","description":"linuxserver Heimdall through 2.8.3 applies its SafeUrlFetcher SSRF protection mechanism only to ItemController; the enhanced-application test and live-stats requests occur via SupportedApps::execute(), a GuzzleHttp client that lacks IP address restrictions. In some realistic installations, the POST /test_config (and GET /get_stats) endpoints are accessible through CSRF, and thus an unauthenticated attacker can force the server to send requests to arbitrary internal hosts and ports (including 169.254.169.254) and read a status/port oracle in addition to partial response data.","status":"published","published":"2026-10-08T04:28:17Z","modified":"2026-10-08T17:35:00Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"low"}],"updated_at":"2026-11-02T17:27:28.108203Z"}],"ghsa":[{"id":"GHSA-hrj5-rw8j-34qj","title":"linuxserver Heimdall through 2.8.3 applies its SafeUrlFetcher SSRF protection mechanism only to...","description":"linuxserver Heimdall through 2.8.3 applies its SafeUrlFetcher SSRF protection mechanism only to ItemController; the enhanced-application test and live-stats requests occur via SupportedApps::execute(), a GuzzleHttp client that lacks IP address restrictions. In some realistic installations, the POST /test_config (and GET /get_stats) endpoints are accessible through CSRF, and thus an unauthenticated attacker can force the server to send requests to arbitrary internal hosts and ports (including 169.254.169.254) and read a status/port oracle in addition to partial response data.","status":"published","published":"2026-10-08T06:31:18Z","modified":"2026-10-08T06:31:19Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"low"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T15:12:55.932488Z"}],"nvd":[{"id":"CVE-2026-107449","description":"linuxserver Heimdall through 2.8.3 applies its SafeUrlFetcher SSRF protection mechanism only to ItemController; the enhanced-application test and live-stats requests occur via SupportedApps::execute(), a GuzzleHttp client that lacks IP address restrictions. In some realistic installations, the POST /test_config (and GET /get_stats) endpoints are accessible through CSRF, and thus an unauthenticated attacker can force the server to send requests to arbitrary internal hosts and ports (including 169.254.169.254) and read a status/port oracle in addition to partial response data.","status":"published","published":"2026-10-08T05:17:04.297Z","modified":"2026-10-08T21:35:53.89Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"low","assessor":"secondary"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:12:55.142936Z"}],"osv":[{"id":"CVE-2026-107449","description":"linuxserver Heimdall through 2.8.3 applies its SafeUrlFetcher SSRF protection mechanism only to ItemController; the enhanced-application test and live-stats requests occur via SupportedApps::execute(), a GuzzleHttp client that lacks IP address restrictions. In some realistic installations, the POST /test_config (and GET /get_stats) endpoints are accessible through CSRF, and thus an unauthenticated attacker can force the server to send requests to arbitrary internal hosts and ports (including 169.254.169.254) and read a status/port oracle in addition to partial response data.","status":"published","published":"2026-10-08T04:28:17.619Z","modified":"2026-10-28T02:31:04.776977485Z","cvss":[{"version":"3.1","score":3.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:N/A:N","level":"low"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T15:44:54.933106Z"}]}}