{"id":"CVE-2026-19203","aliases":["GHSA-xc35-c22g-239h"],"url":"https://o3.security/vulnerability/CVE-2026-19203","summary":null,"details":"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":"2026-09-08T12:08:37.576Z","modified":"2026-09-09T03:47:13.052032851Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/19xxx/CVE-2026-19203.json"},{"type":"ADVISORY","url":"https://github.com/jetty/jetty.project/security/advisories/GHSA-xc35-c22g-239h"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-19203"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-09T03:47:13.052032851Z"}}