CVE-2026-67418

The RabbitMQ messaging broker contains a vulnerability in the MQTT 5 parser (specifically deps/rabbitmq_mqtt/src/rabbit_mqtt_packet.erl) affecting versions 3.13.0 to 3.13.18 , 4.0.23 , 4.1.14 , 4.2.9 , and 4.3.4 . The parser incorrectly accepts the Request-Problem-Information property on PUBLISH ...