{"cve":{"cve_id":"CVE-2026-19203","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":0.00289,"epss_percentile":0.21428,"epss_as_of":"2026-09-15","description":"A client may issue specially crafted HTTP/1.1 chunked requests to a Jetty server that cause Jetty and an intermediary proxy to interpret different request boundaries, potentially resulting in HTTP request smuggling.\n\n\n\n\nThis is caused by Jetty accepting a lone LF character as a terminator in parts of chunked request parsing. Depending on the Jetty version and configured HTTP compliance mode, this may occur in chunk extensions, chunk data termination, or trailer termination.","published_at":"2026-09-08T12:08:37.576000Z","last_modified_at":"2026-09-08T15:18:42.667000Z","cvss_v3_score":null,"cvss_v3_vector":null,"cvss_v3_severity":null,"cvss_v4_score":8.3,"cvss_v4_vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N","cvss_v4_severity":"HIGH","ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-444"],"nvd_references":["https://github.com/jetty/jetty.project/security/advisories/GHSA-xc35-c22g-239h"],"vuln_status":"Deferred","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":"2026-09-08T18:37:54.191574Z","updated_at":"2026-09-09T05:52:40.372872Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":null,"metrics":[]},"cvss_v4_decoded":{"version":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"AT","name":"Attack Requirements","value":"P","value_label":"Present"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"VC","name":"Confidentiality (Vulnerable System)","value":"L","value_label":"Low"},{"metric":"VI","name":"Integrity (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VA","name":"Availability (Vulnerable System)","value":"N","value_label":"None"},{"metric":"SC","name":"Confidentiality (Subsequent System)","value":"N","value_label":"None"},{"metric":"SI","name":"Integrity (Subsequent System)","value":"N","value_label":"None"},{"metric":"SA","name":"Availability (Subsequent System)","value":"N","value_label":"None"}]},"affected":[{"vendor_slug":"eclipse-foundation","vendor_name":"Eclipse Foundation","product_slug":"eclipse-jetty","product_name":"Eclipse Jetty","version_start":"12.1.0","version_start_inclusive":true,"version_end":"12.1.11","version_end_inclusive":true,"cpe23_uri":"cve5:eclipse-foundation:eclipse-jetty:12.1.0:12.1.11"},{"vendor_slug":"eclipse-foundation","vendor_name":"Eclipse Foundation","product_slug":"eclipse-jetty","product_name":"Eclipse Jetty","version_start":"12.0.0","version_start_inclusive":true,"version_end":"12.0.37","version_end_inclusive":true,"cpe23_uri":"cve5:eclipse-foundation:eclipse-jetty:12.0.0:12.0.37"},{"vendor_slug":"eclipse-foundation","vendor_name":"Eclipse Foundation","product_slug":"eclipse-jetty","product_name":"Eclipse Jetty","version_start":"11.0.0","version_start_inclusive":true,"version_end":"11.0.31","version_end_inclusive":true,"cpe23_uri":"cve5:eclipse-foundation:eclipse-jetty:11.0.0:11.0.31"},{"vendor_slug":"eclipse-foundation","vendor_name":"Eclipse Foundation","product_slug":"eclipse-jetty","product_name":"Eclipse Jetty","version_start":"10.0.0","version_start_inclusive":true,"version_end":"10.0.31","version_end_inclusive":true,"cpe23_uri":"cve5:eclipse-foundation:eclipse-jetty:10.0.0:10.0.31"},{"vendor_slug":"eclipse-foundation","vendor_name":"Eclipse Foundation","product_slug":"eclipse-jetty","product_name":"Eclipse Jetty","version_start":"9.4.0","version_start_inclusive":true,"version_end":"9.4.63","version_end_inclusive":true,"cpe23_uri":"cve5:eclipse-foundation:eclipse-jetty:9.4.0:9.4.63"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/jetty/jetty.project/security/advisories/GHSA-xc35-c22g-239h","source_type":"VENDOR_ADVISORY","tags":["advisory"]}],"timeline":[{"type":"published","at":"2026-09-08T12:08:37.576000Z","label":"CVE published","source":null}]}