CVE-2026-19204 | BDVDB-2026-368702 Detail

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.

Impact#

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References#

Exploit#

History#

1. Version 12026-09-07Record published in the CVE List.
2. Version 22026-09-08Most recent update recorded in the CVE List.