{"id":"CVE-2025-57783","summary":"Improper header parsing may lead to request smuggling","details":"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.","modified":"2026-08-15T04:25:19.493945068Z","published":"2026-01-26T17:45:36.947Z","database_specific":{"cna_assigner":"certcc","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/57xxx/CVE-2025-57783.json"},"references":[{"type":"WEB","url":"https://gitlab.com/hsleisink/hiawatha/-/blame/master/src/http.c?ref_type=heads#L205"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/57xxx/CVE-2025-57783.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-57783"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://gitlab.com/hsleisink/hiawatha","events":[{"introduced":"1f0f79b6cb108a593123a74ad7c9fd1ad36a9253"},{"last_affected":"1f0f79b6cb108a593123a74ad7c9fd1ad36a9253"}],"database_specific":{"cpe":"cpe:2.3:a:hiawatha-webserver:hiawatha:11.7:*:*:*:*:*:*:*","extracted_events":[{"introduced":"11.7"},{"last_affected":"11.7"}],"source":"CPE_STRING"}}],"versions":["11.7","v11.7"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-57783.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"}]}