| Название | EMQX EMQX Broker EMQX 6.1.0 (confirmed) Race Condition |
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| Описание | EMQX Broker contains a non-atomic state persistence flaw in the handling of MQTT QoS 2 PUBLISH packets for persistent sessions. The broker publishes a message to subscribers before the corresponding PacketId deduplication state is durably committed, and the state commit is deferred asynchronously. If the broker crashes, recovers, or the client reconnects during this persistence window, the PacketId state may be lost, causing the same QoS 2 message to be accepted and published again. This violates the MQTT QoS 2 exactly-once guarantee and can result in integrity-impacting duplicate message delivery in downstream systems.
Vendor Homepage
https://www.emqx.com/zh
Product Source / Repository
https://github.com/emqx/emqx
Report / Reference
https://github.com/Pathfind-tama/Report_EMQX_MQTT |
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| Источник | ⚠️ https://github.com/Pathfind-tama/Report_EMQX_MQTT |
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| Пользователь | CCCaaa (UID 96811) |
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| Представление | 22.04.2026 11:01 (2 месяцы назад) |
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| Модерация | 16.05.2026 13:19 (24 days later) |
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| Статус | принято |
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| Запись VulDB | 364329 [EMQX до 6.2.0 QoS 2 PUBLISH Packet emqx_persistent_session_ds.erl состояние гонки] |
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| Баллы | 20 |
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