{"id":"CVE-2025-57783","aliases":["EUVD-2025-206340","GHSA-mrpv-h52h-rxhw"],"status":"published","title":"Improper header parsing may lead to request smuggling","description":"Improper header parsing may lead to request smuggling has been identified in Hiawatha webserver version 11.7 which allows an unauthenticated attacker to access restricted resources managed by Hiawatha webserver.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-08","score":0.00472,"percentile":0.41103,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2026-01-26T17:45:36Z","modified":"2026-11-04T02:46:47Z","products":[{"vendor":"hiawatha","product":"hiawatha web server"},{"vendor":"hiawatha-webserver","product":"hiawatha"}],"references":[{"url":"https://gitlab.com/hsleisink/hiawatha/-/blame/master/src/http.c?ref_type=heads#L205","tags":["Product","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-57783","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-mrpv-h52h-rxhw"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/57xxx/CVE-2025-57783.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-57783","title":"Improper header parsing may lead to request smuggling","description":"Improper header parsing may lead to request smuggling has been identified in Hiawatha webserver version 11.7 which allows an unauthenticated attacker to access restricted resources managed by Hiawatha webserver.","status":"published","published":"2026-01-26T17:45:36.947Z","modified":"2026-01-26T20:55:04.568Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"adp"}],"updated_at":"2026-11-02T14:32:35.099955Z"}],"euvd":[{"id":"EUVD-2025-206340","description":"Improper header parsing may lead to request smuggling has been identified in Hiawatha webserver version 11.7 which allows an unauthenticated attacker to access restricted resources managed by Hiawatha webserver.","status":"published","published":"2026-01-26T17:45:36Z","modified":"2026-01-26T20:55:04Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T19:48:47.293439Z"}],"ghsa":[{"id":"GHSA-mrpv-h52h-rxhw","title":"Improper header parsing may lead to request smuggling has been identified in Hiawatha webserver...","description":"Improper header parsing may lead to request smuggling has been identified in Hiawatha webserver version 11.7 which allows an unauthenticated attacker to access restricted resources managed by Hiawatha webserver.","status":"published","published":"2026-01-26T18:31:30Z","modified":"2026-01-26T21:31:39Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:05:54.711562Z"}],"nvd":[{"id":"CVE-2025-57783","description":"Improper header parsing may lead to request smuggling has been identified in Hiawatha webserver version 11.7 which allows an unauthenticated attacker to access restricted resources managed by Hiawatha webserver.","status":"published","published":"2026-01-26T18:16:27.35Z","modified":"2026-06-17T09:43:25.407Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"}],"updated_at":"2026-11-02T14:11:59.073638Z"}],"osv":[{"id":"CVE-2025-57783","title":"Improper header parsing may lead to request smuggling","description":"Improper header parsing may lead to request smuggling has been identified in Hiawatha webserver version 11.7 which allows an unauthenticated attacker to access restricted resources managed by Hiawatha webserver.","status":"published","published":"2026-01-26T17:45:36.947Z","modified":"2026-11-04T02:46:47.48541072Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-04T02:53:57.551196Z"}]}}