CVE-2026-13491 78 xiaozhi-esp32 MQTT Goodbye mqtt_protocol.cc GetInstance denial of service

A vulnerability was detected in 78 xiaozhi-esp32 up to 2.2.6. This vulnerability affects the function Application::GetInstance of the file main/protocols/mqttprotocol.cc of the component MQTT Goodbye Handler. Performing a manipulation of the argument sessionid results in denial of service. The...