{"id":"UBUNTU-CVE-2026-19204","details":"A client may send a WebSocket frame with an unknown opcode and a very large declared payload length, causing Jetty to attempt a large memory allocation and potentially exhaust the JVM heap. This occurs when auto-fragmentation is enabled, as unknown opcodes bypass the normal maximum frame size handling and payload allocation occurs before the opcode is validated.","modified":"2026-09-16T14:01:36.889909659Z","published":"2026-09-07T11:17:00Z","upstream":["CVE-2026-19204"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-19204"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-19204"},{"type":"REPORT","url":"https://github.com/jetty/jetty.project/security/advisories/GHSA-85fq-fc5f-7j7g"}],"affected":[{"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-2026-19204.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_name":"jetty9","binary_version":"9.4.15-1~18.04.1ubuntu1"},{"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-2026-19204.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-2026-19204.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_name":"libjetty9-extra-java","binary_version":"9.4.45-1"},{"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-2026-19204.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-2026-19204.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_name":"jetty12","binary_version":"12.0.32-1"},{"binary_name":"libjetty12-extra-java","binary_version":"12.0.32-1"},{"binary_version":"12.0.32-1","binary_name":"libjetty12-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19204.json"}},{"package":{"name":"jetty9","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/jetty9?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["9.4.57-1","9.4.57-1.1","9.4.58-1"],"ecosystem_specific":{"binaries":[{"binary_version":"9.4.58-1","binary_name":"jetty9"},{"binary_version":"9.4.58-1","binary_name":"libjetty9-extra-java"},{"binary_name":"libjetty9-java","binary_version":"9.4.58-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-19204.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"},{"type":"Ubuntu","score":"medium"}]}