{"id":"UBUNTU-CVE-2026-19203","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. This 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.","modified":"2026-09-16T14:01:36.101088958Z","published":"2026-09-08T13:17:00Z","upstream":["CVE-2026-19203"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-19203"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-19203"}],"affected":[{"package":{"name":"jetty","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/jetty?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.1.26-1ubuntu1","6.1.26-1ubuntu1.1","6.1.26-1ubuntu1.2"],"ecosystem_specific":{"binaries":[{"binary_name":"jetty","binary_version":"6.1.26-1ubuntu1.2"},{"binary_name":"libjetty-extra","binary_version":"6.1.26-1ubuntu1.2"},{"binary_name":"libjetty-extra-java","binary_version":"6.1.26-1ubuntu1.2"},{"binary_name":"libjetty-java","binary_version":"6.1.26-1ubuntu1.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19203.json"}},{"package":{"name":"jetty","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/jetty?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.1.26-5","6.1.26-5ubuntu0.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libjetty-extra","binary_version":"6.1.26-5ubuntu0.1"},{"binary_name":"libjetty-extra-java","binary_version":"6.1.26-5ubuntu0.1"},{"binary_name":"libjetty-java","binary_version":"6.1.26-5ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19203.json"}},{"package":{"name":"jetty9","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/jetty9?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["9.2.14-1"],"ecosystem_specific":{"binaries":[{"binary_name":"jetty9","binary_version":"9.2.14-1"},{"binary_version":"9.2.14-1","binary_name":"libjetty9-extra-java"},{"binary_name":"libjetty9-java","binary_version":"9.2.14-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19203.json"}},{"package":{"name":"jetty9","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/jetty9?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["9.2.22-2","9.2.22-3","9.2.23-1","9.4.15-1~18.04.1ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_version":"9.4.15-1~18.04.1ubuntu1","binary_name":"jetty9"},{"binary_name":"libjetty9-extra-java","binary_version":"9.4.15-1~18.04.1ubuntu1"},{"binary_name":"libjetty9-java","binary_version":"9.4.15-1~18.04.1ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19203.json"}},{"package":{"name":"jetty9","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/jetty9?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["9.4.18-2build2","9.4.26-1"],"ecosystem_specific":{"binaries":[{"binary_version":"9.4.26-1","binary_name":"jetty9"},{"binary_name":"libjetty9-extra-java","binary_version":"9.4.26-1"},{"binary_version":"9.4.26-1","binary_name":"libjetty9-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19203.json"}},{"package":{"name":"jetty9","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/jetty9?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["9.4.39-3","9.4.44-2","9.4.44-3","9.4.44-4","9.4.45-1"],"ecosystem_specific":{"binaries":[{"binary_name":"jetty9","binary_version":"9.4.45-1"},{"binary_version":"9.4.45-1","binary_name":"libjetty9-extra-java"},{"binary_name":"libjetty9-java","binary_version":"9.4.45-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19203.json"}},{"package":{"name":"jetty9","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/jetty9?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["9.4.51-2","9.4.53-1"],"ecosystem_specific":{"binaries":[{"binary_version":"9.4.53-1","binary_name":"jetty9"},{"binary_name":"libjetty9-extra-java","binary_version":"9.4.53-1"},{"binary_name":"libjetty9-java","binary_version":"9.4.53-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19203.json"}},{"package":{"name":"jetty12","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/jetty12?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["12.0.17-3.1","12.0.32-1"],"ecosystem_specific":{"binaries":[{"binary_version":"12.0.32-1","binary_name":"jetty12"},{"binary_name":"libjetty12-extra-java","binary_version":"12.0.32-1"},{"binary_name":"libjetty12-java","binary_version":"12.0.32-1"}]},"database_s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