{"cve":{"cve_id":"CVE-2026-64785","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00181,"epss_percentile":0.07658,"epss_as_of":"2026-08-26","description":"SwiftNIO HTTP/2 was missing validation on inbound HEADERS frames that let CR, LF, NUL, SP and other control characters reach an HTTP/1.1 backend through NIOHTTP2's HTTP/2-to-HTTP/1 codec, enabling HTTP request smuggling or response splitting. This vulnerability is addressed in swift-nio-http2 version 1.45.0.","published_at":"2026-07-23T18:50:40.468000Z","last_modified_at":"2026-07-24T21:16:45.877000Z","cvss_v3_score":5.3,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","cvss_v3_severity":"MEDIUM","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":true,"ssvc_technical_impact":"partial","cwes":["CWE-444"],"nvd_references":["https://github.com/apple/swift-nio-http2/security/advisories/GHSA-q3g2-m552-3r9c"],"vuln_status":"Awaiting Analysis","trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-07-23T20:48:49.729775Z","updated_at":"2026-07-26T04:52:35.406432Z"},"effective_severity":"MEDIUM","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"N","value_label":"None"},{"metric":"I","name":"Integrity","value":"L","value_label":"Low"},{"metric":"A","name":"Availability","value":"N","value_label":"None"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"apple","vendor_name":"Apple","product_slug":"swift-nio-http2","product_name":"swift-nio-http2","version_start":"0","version_start_inclusive":true,"version_end":"1.45.0","version_end_inclusive":false,"cpe23_uri":"cve5:apple:swift-nio-http2:0:1.45.0"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/apple/swift-nio-http2/security/advisories/GHSA-q3g2-m552-3r9c","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2026-07-23T18:50:40.468000Z","label":"CVE published","source":null},{"type":"ssvc_changed","at":"2026-07-24T20:49:49.728588Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-07-24T20:49:49.728588Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-07-24T20:49:49.728588Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-07-24T20:49:49.728588Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-07-24T20:49:49.728588Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-07-24T20:49:49.728588Z","label":"CVSS score revised","source":"vulnrichment"}]}