{"id":"DEBIAN-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":"2026-09-29T13:03:44.778031221Z","published":"2026-09-07T11:17:20.600Z","upstream":["CVE-2026-19204"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-19204"}],"affected":[{"package":{"name":"jetty12","ecosystem":"Debian:13","purl":"pkg:deb/debian/jetty12?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["12.0.17-3","12.0.17-3.1","12.0.17-3.1~deb13u1","12.0.32-1","12.0.32-2","12.0.33-1","12.0.39-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-19204.json"}},{"package":{"name":"jetty12","ecosystem":"Debian:14","purl":"pkg:deb/debian/jetty12?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["12.0.17-3","12.0.17-3.1","12.0.17-3.1~deb13u1","12.0.32-1","12.0.32-2","12.0.33-1","12.0.39-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"}]}