{"id":"CVE-2026-51785","aliases":["EUVD-2026-51645","GHSA-8mxp-hf23-8hp4"],"status":"published","title":"An issue in Hugo Leisink Hiawatha v.12.1 and before allows a remote attacker to execute arbitrary...","description":"An issue in Hugo Leisink Hiawatha v.12.1 and before allows a remote attacker to execute arbitrary code via a crafted request","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":"2026-11-10","score":0.01149,"percentile":0.67136,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-94"],"published":"2026-07-31T00:00:00Z","modified":"2026-10-23T23:10:00Z","references":[{"url":"https://www.rfc-editor.org/rfc/rfc9112.html#section-6.3"},{"url":"https://www.rfc-editor.org/rfc/rfc2616"},{"url":"https://www.rfc-editor.org/rfc/rfc2616.html#section-4.4"},{"url":"https://fenrisk.com/hiawatha-http-smuggling","tags":["exploit"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-51785"},{"url":"https://github.com/advisories/GHSA-8mxp-hf23-8hp4"}],"sources":{"cve":[{"id":"CVE-2026-51785","description":"An issue in Hugo Leisink Hiawatha v.12.1 and before allows a remote attacker to execute arbitrary code via a crafted request","status":"published","published":"2026-07-31T00:00:00Z","modified":"2026-08-03T17:07:17.616Z","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-94"],"updated_at":"2026-11-02T13:39:50.160666Z"}],"euvd":[{"id":"EUVD-2026-51645","description":"An issue in Hugo Leisink Hiawatha v.12.1 and before allows a remote attacker to execute arbitrary code via a crafted request","status":"published","published":"2026-07-31T00:00:00Z","modified":"2026-08-03T17:07:17Z","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":"2026-11-02T18:02:24.01774Z"}],"ghsa":[{"id":"GHSA-8mxp-hf23-8hp4","title":"An issue in Hugo Leisink Hiawatha v.12.1 and before allows a remote attacker to execute arbitrary...","description":"An issue in Hugo Leisink Hiawatha v.12.1 and before allows a remote attacker to execute arbitrary code via a crafted request","status":"published","published":"2026-07-31T21:31:59Z","modified":"2026-08-03T18:30:38Z","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-94"],"updated_at":"2026-11-02T15:10:02.233759Z"}],"nvd":[{"id":"CVE-2026-51785","description":"An issue in Hugo Leisink Hiawatha v.12.1 and before allows a remote attacker to execute arbitrary code via a crafted request","status":"published","published":"2026-07-31T21:17:31.73Z","modified":"2026-10-23T23:10:00.157Z","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-94"],"updated_at":"2026-11-02T14:12:34.290716Z"}]}}