{"id":"CVE-2023-51803","aliases":["EUVD-2023-56487","GHSA-7822-f4vj-qh7p"],"status":"published","title":"LinuxServer.io Heimdall before 2.5.7 does not prevent use of icons that have non-image data such...","description":"LinuxServer.io Heimdall before 2.5.7 does not prevent use of icons that have non-image data such as the \"\u003c?php ?\u003e\" substring.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-12","score":0.00702,"percentile":0.53719,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-674"],"published":"2024-03-31T00:00:00Z","modified":"2026-10-28T02:31:13Z","products":[{"vendor":"linuxserver","product":"heimdall_application_dashboard"}],"references":[{"url":"https://github.com/linuxserver/Heimdall/pull/1167","tags":["x_transferred","fix"]},{"url":"https://github.com/linuxserver/Heimdall/pull/1173","tags":["x_transferred","fix"]},{"url":"https://github.com/linuxserver/Heimdall/releases/tag/v2.5.7","tags":["x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-51803","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-7822-f4vj-qh7p"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/51xxx/CVE-2023-51803.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2023-51803","description":"LinuxServer.io Heimdall before 2.5.7 does not prevent use of icons that have non-image data such as the \"\u003c?php ?\u003e\" substring.","status":"published","published":"2024-03-31T00:00:00Z","modified":"2024-08-20T19:40:24.777Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"adp"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T14:35:17.48054Z"}],"euvd":[{"id":"EUVD-2023-56487","description":"LinuxServer.io Heimdall before 2.5.7 does not prevent use of icons that have non-image data such as the \"\u003c?php ?\u003e\" substring.","status":"published","published":"2024-03-31T00:00:00Z","modified":"2024-08-20T19:40:24Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T00:56:14.606712Z"}],"ghsa":[{"id":"GHSA-7822-f4vj-qh7p","title":"LinuxServer.io Heimdall before 2.5.7 does not prevent use of icons that have non-image data such...","description":"LinuxServer.io Heimdall before 2.5.7 does not prevent use of icons that have non-image data such as the \"\u003c?php ?\u003e\" substring.","status":"published","published":"2024-04-01T00:30:43Z","modified":"2024-08-20T21:31:31Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T14:58:01.859506Z"}],"nvd":[{"id":"CVE-2023-51803","description":"LinuxServer.io Heimdall before 2.5.7 does not prevent use of icons that have non-image data such as the \"\u003c?php ?\u003e\" substring.","status":"published","published":"2024-04-01T00:15:49.447Z","modified":"2026-06-17T06:41:42.757Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-674"],"updated_at":"2026-11-02T14:09:10.192572Z"}],"osv":[{"id":"CVE-2023-51803","description":"LinuxServer.io Heimdall before 2.5.7 does not prevent use of icons that have non-image data such as the \"\u003c?php ?\u003e\" substring.","status":"published","published":"2024-03-31T00:00:00Z","modified":"2026-10-28T02:31:13.03423064Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T15:44:35.245372Z"}]}}