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

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...

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...

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: 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...

SUSE CVE-2024-3935

In Eclipse Mosquito, versions from 2.0.0 through 2.0.18, if a Mosquitto broker is configured to create an outgoing bridge connection, and that bridge connection has an incoming topic configured that makes use of topic remapping, then if the remote connection sends a crafted PUBLISH packet to the...

CVE-2024-3935 Eclipse Mosquito: Double free vulnerability

In Eclipse Mosquito, versions from 2.0.0 through 2.0.18, if a Mosquitto broker is configured to create an outgoing bridge connection, and that bridge connection has an incoming topic configured that makes use of topic remapping, then if the remote connection sends a crafted PUBLISH packet to the...