CVE-2026-19204
NONE—CVSS v3
—CVSS v2
—
EPSS (exploit probability)
CWE-770CWE
Description
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.
Affected routers (0)
No routers currently mapped to this CVE in our database.