CVE-2026-58209: Incorrect Authorization

NATS Server is a high-performance server for NATS.io, the cloud and edge native messaging system. Prior to 2.14.3 and 2.12.12, MQTT retained message delivery and QoS1+ durable replay could deliver messages whose original topics matched a subscriber configured subscribe deny rule because these...

CVE-2026-42209 FlashMQ: Division by zero crash when using non-default deferred retained message setting

FlashMQ is a MQTT broker/server, designed for multi-CPU environments. Prior to version 1.26.1, a remote client with retained publish permission can crash the FlashMQ broker when both setretainedmessagedefertimeout and setretainedmessagedefertimeoutspread are configured to non-default values,...

CVE-2026-42209 FlashMQ: Division by zero crash when using non-default deferred retained message setting

FlashMQ is a MQTT broker/server, designed for multi-CPU environments. Prior to version 1.26.1, a remote client with retained publish permission can crash the FlashMQ broker when both setretainedmessagedefertimeout and setretainedmessagedefertimeoutspread are configured to non-default values,...

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...

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-2026-30867

CocoaMQTT is a MQTT 5.0 client library for iOS and macOS written in Swift. Prior to version 2.2.2, 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. If an attacker...

CVE-2026-30867 CocoaMQTT: Denial of Service via Reachable Assertion in `PUBLISH` Packet Parsing

CocoaMQTT is a MQTT 5.0 client library for iOS and macOS written in Swift. Prior to version 2.2.2, 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. If an attacker...

CVE-2026-30867

CocoaMQTT prior to v2.2.2 is vulnerable to a Denial of Service via a malformed 4-byte PUBLISH payload with the RETAIN flag set. A malicious broker or attacker can cause a vulnerable iOS/macOS/tvOS client to crash when it subscribes to the affected topic, leading to a persistent DoS until the reta...

Unauthorized Access Vulnerability in Baidu's Skyworks Intelligence Platform Retained Message

Baidu Tiangong Intelligence Platform is a cloud service platform for the IoT field, which communicates through mainstream IoT protocols e.g., MQTT, allowing IoT projects to be built between smart devices and the cloud. An unauthorized access vulnerability exists in Baidu Tiangong Intelligent...

CVE-2018-12546

In Eclipse Mosquitto version 1.0 to 1.5.5 inclusive when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients...

CVE-2018-12546

In Eclipse Mosquitto version 1.0 to 1.5.5 inclusive when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients...

CVE-2018-12546

In Eclipse Mosquitto version 1.0 to 1.5.5 inclusive when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients...

CVE-2018-12546

In Eclipse Mosquitto version 1.0 to 1.5.5 inclusive when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients...

CVE-2018-12546

In Eclipse Mosquitto version 1.0 to 1.5.5 inclusive when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients...

CVE-2018-12546

In Eclipse Mosquitto version 1.0 to 1.5.5 inclusive when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients...

CVE-2018-12546: Improper Access Control

In Eclipse Mosquitto version 1.0 to 1.5.5 inclusive when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients...