Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in its WebSocket frame parsing, where a frame carrying an unknown opcode bypasses the maximum frame size validation and its declared payload length is allocated before the opcode is...

CVE-2026-19204

Eclipse Jetty is vulnerable in its WebSocket component when auto-fragmentation is enabled. A remote, unauthenticated client can send a WebSocket frame with an unknown opcode and a very large declared payload length. Because unknown opcodes bypass the normal maximum frame size handling and payload...

EUVD-2026-72335

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...