{"id":"CVE-2023-51771","aliases":["EUVD-2023-56459","GHSA-9rj5-9jpj-cqqh"],"status":"published","title":"In MicroHttpServer (aka Micro HTTP Server) through a8ab029, _ParseHeader in lib/server.c allows a...","description":"In MicroHttpServer (aka Micro HTTP Server) through a8ab029, _ParseHeader in lib/server.c allows a one-byte recv buffer overflow via a long URI.","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":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.00701,"percentile":0.53709,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-120"],"published":"2023-12-25T00:00:00Z","modified":"2026-06-17T06:41:37Z","products":[{"vendor":"starnight","product":"micro_http_server"}],"references":[{"url":"https://github.com/starnight/MicroHttpServer/issues/8","tags":["x_transferred","Exploit","Issue Tracking"]},{"url":"https://github.com/starnight/MicroHttpServer/tree/a8ab029c9a26a4c9f26b9d8a2757b8299aaff120","tags":["x_transferred","Product"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-51771"},{"url":"https://github.com/advisories/GHSA-9rj5-9jpj-cqqh"}],"sources":{"cve":[{"id":"CVE-2023-51771","description":"In MicroHttpServer (aka Micro HTTP Server) through a8ab029, _ParseHeader in lib/server.c allows a one-byte recv buffer overflow via a long URI.","status":"published","published":"2023-12-25T00:00:00Z","modified":"2025-04-23T16:15:19.28Z","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-120"],"updated_at":"2026-11-02T14:35:17.48054Z"}],"euvd":[{"id":"EUVD-2023-56459","description":"In MicroHttpServer (aka Micro HTTP Server) through a8ab029, _ParseHeader in lib/server.c allows a one-byte recv buffer overflow via a long URI.","status":"published","published":"2023-12-25T00:00:00Z","modified":"2025-04-23T16:15:19Z","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":"2026-11-02T20:52:13.204099Z"}],"ghsa":[{"id":"GHSA-9rj5-9jpj-cqqh","title":"In MicroHttpServer (aka Micro HTTP Server) through a8ab029, _ParseHeader in lib/server.c allows a...","description":"In MicroHttpServer (aka Micro HTTP Server) through a8ab029, _ParseHeader in lib/server.c allows a one-byte recv buffer overflow via a long URI.","status":"published","published":"2023-12-25T06:30:20Z","modified":"2024-01-12T05:08:51Z","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-120"],"updated_at":"2026-11-02T14:55:24.003446Z"}],"nvd":[{"id":"CVE-2023-51771","description":"In MicroHttpServer (aka Micro HTTP Server) through a8ab029, _ParseHeader in lib/server.c allows a one-byte recv buffer overflow via a long URI.","status":"published","published":"2023-12-25T05:15:08.73Z","modified":"2026-06-17T06:41:37.637Z","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":"primary"},{"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-120"],"updated_at":"2026-11-02T14:08:57.117371Z"}]}}