BIT-RABBITMQ-2026-67418 RabbitMQ MQTT 5: inapplicable PUBLISH property disconnects matching subscribers

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.19, 4.0.24, 4.1.15, 4.2.10, and 4.3.5, the MQTT 5 parser in deps/rabbitmqmqtt/src/rabbitmqttpacket.erl accepts Request-Problem-Information on PUBLISH packets even though the property is valid only for CONNECT. An authenticated...

CVE-2026-67418 RabbitMQ MQTT 5: inapplicable PUBLISH property disconnects matching subscribers

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.19, 4.0.24, 4.1.15, 4.2.10, and 4.3.5, the MQTT 5 parser in deps/rabbitmqmqtt/src/rabbitmqttpacket.erl accepts Request-Problem-Information on PUBLISH packets even though the property is valid only for CONNECT. An authenticated...

CVE-2026-67418 RabbitMQ MQTT 5: inapplicable PUBLISH property disconnects matching subscribers

RabbitMQ is a messaging and streaming broker. From 3.13.0 until 3.13.19, 4.0.24, 4.1.15, 4.2.10, and 4.3.5, the MQTT 5 parser in deps/rabbitmqmqtt/src/rabbitmqttpacket.erl accepts Request-Problem-Information on PUBLISH packets even though the property is valid only for CONNECT. An authenticated...

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 ...

CVE-2026-54412 MQTT-C Heap Out-of-Bounds Read and Integer Underflow in mqtt_unpack_publish_response()

LiamBindle MQTT-C through version 1.1.6 contains a heap-based out-of-bounds read and integer underflow in the mqttunpackpublishresponse function in src/mqtt.c that allows a remote unauthenticated attacker controlling an MQTT broker - or able to inject MQTT traffic into an unencrypted session - to...

CVE-2026-54412

CVE-2026-54412 affects LiamBindle MQTT-C up to v1.1.6. The vulnerability is a heap-based out-of-bounds read and integer underflow in mqtt_unpack_publish_response() (src/mqtt.c). A broker-controlled or injected PUBLISH packet can allow a remote unauthenticated attacker to crash a subscribed MQTT-C...

PT-2026-49135

Name of the Vulnerable Software and Affected Versions LiamBindle MQTT-C versions prior to 1.1.7 Description A heap-based out-of-bounds read and integer underflow exist in the mqtt unpack publish response function within src/mqtt.c. A remote unauthenticated attacker who controls an MQTT broker or...

CVE-2026-8741 EMQX QoS 2 PUBLISH Packet emqx_persistent_session_ds.erl race condition

A vulnerability has been found in EMQX up to 6.2.0. This affects an unknown function of the file apps/emqx/src/emqxpersistentsessionds.erl of the component QoS 2 PUBLISH Packet Handler. Such manipulation leads to race condition. The attack may be performed from remote. A high complexity level is...

CVE-2026-8741

The CVE-2026-8741 entry concerns EMQX (up to 6.2.0) and a race condition in an unknown function of the file apps/emqx/src/emqx_persistent_session_ds.erl within the QoS 2 PUBLISH Packet Handler. According to sources, the issue can be exploited remotely, with high attack complexity and a reported d...

CVE-2026-8741 EMQX QoS 2 PUBLISH Packet emqx_persistent_session_ds.erl race condition

A vulnerability has been found in EMQX up to 6.2.0. This affects an unknown function of the file apps/emqx/src/emqxpersistentsessionds.erl of the component QoS 2 PUBLISH Packet Handler. Such manipulation leads to race condition. The attack may be performed from remote. A high complexity level is...

EUVD-2026-30692

A vulnerability has been found in EMQX up to 6.2.0. This affects an unknown function of the file apps/emqx/src/emqxpersistentsessionds.erl of the component QoS 2 PUBLISH Packet Handler. Such manipulation leads to race condition. The attack may be performed from remote. A high complexity level is...

CVE-2026-8741

A vulnerability has been found in EMQX up to 6.2.0. This affects an unknown function of the file apps/emqx/src/emqxpersistentsessionds.erl of the component QoS 2 PUBLISH Packet Handler. Such manipulation leads to race condition. The attack may be performed from remote. A high complexity level is...

CVE-2026-8741: Concurrent Execution using Shared Resource with Improper Synchronization

A vulnerability has been found in EMQX up to 6.2.0. This affects an unknown function of the file apps/emqx/src/emqxpersistentsessionds.erl of the component QoS 2 PUBLISH Packet Handler. Such manipulation leads to race condition. The attack may be performed from remote. A high complexity level is...

PT-2026-41527

Name of the Vulnerable Software and Affected Versions EMQX versions prior to 6.2.0 Description A race condition exists in the QoS 2 PUBLISH Packet Handler component within the apps/emqx/src/emqx persistent session ds.erl file. This issue allows a remote attacker to trigger a race condition, which...

GHSA-R3FR-7M74-Q7G2 CocoaMQTT: Denial of Service via Reachable Assertion in `PUBLISH` Packet Parsing

A vulnerability exists in the packet parsing logic of CocoaMQTT that allows an attacker or a compromised/malicious MQTT broker to remotely crash the host iOS/macOS/tvOS application. The vulnerability is located in Source/FramePublish.swift during the extraction of the Topic string from the incomi...

CocoaMQTT: Denial of Service via Reachable Assertion in `PUBLISH` Packet Parsing

A vulnerability exists in the packet parsing logic of CocoaMQTT that allows an attacker or a compromised/malicious MQTT broker to remotely crash the host iOS/macOS/tvOS application. The vulnerability is located in Source/FramePublish.swift during the extraction of the Topic string from the incomi...

CVE-2025-59947

Summary: NanoMQ before version 0.24.4 is affected by a buffer overflow in PUBLISH packet handling that triggers both shared and vanilla (normal) subscriptions. This vulnerability is fixed in 0.24.4. Impact (as stated): Potential buffer overflow with high impact on confidentiality, integrity, and ...

EUVD-2021-21088

Malware in sbrugna...

CVE-2019-13120

Amazon FreeRTOS up to and including v1.4.8 lacks length checking in prvProcessReceivedPublish, resulting in untargetable leakage of arbitrary memory contents on a device to an attacker. If an attacker has the authorization to send a malformed MQTT publish packet to an Amazon IoT Thing, which...

OESA-2024-2343 mosquitto security update

Mosquitto is an open source message broker that implements the MQ Telemetry Transport protocol version 3.1 and 3.1.1 MQTT provides a lightweight method of carrying out messaging using a publish/subscribe model. This makes it suitable for "machine to machine" messaging such as with low power senso...