CVE-2026-73863 NanoMQ: Heap-Buffer-Overflow in `nmq_subinfo_decode()` During MQTT v5 SUBSCRIBE Parsing

NanoMQ is an MQTT broker. Prior to 0.24.14, NanoMQ's broker-side MQTT v5 nmqsubinfodecode function in nng/src/sp/protocol/mqtt/mqttparser.c reuses lenofvarint from the outer Properties Length while parsing each SUBSCRIPTIONIDENTIFIER. A remote client can send a SUBSCRIBE packet with a multi-byte...

CVE-2026-26447

A flaw was found in Stomper. An unauthenticated client can exploit a use-after-free vulnerability by repeatedly issuing SUBSCRIBE commands for the same destination over a single connection and then closing that connection. This leads to incorrect cleanup of internal subscription structures,...

CVE-2026-26447

Stomper 5e2741e is vulnerable to Use-After-Free. When a single client repeatedly issues SUBSCRIBE commands for the same destination over one connection and then closes that connection, the broker performs incorrect cleanup of its internal subscription structures. This results in a heap...

CVE-2026-26447

Stomper 5e2741e is vulnerable to Use-After-Free. When a single client repeatedly issues SUBSCRIBE commands for the same destination over one connection and then closes that connection, the broker performs incorrect cleanup of its internal subscription structures. This results in a heap...

EUVD-2026-66754

Stomper 5e2741e is vulnerable to Use-After-Free. When a single client repeatedly issues SUBSCRIBE commands for the same destination over one connection and then closes that connection, the broker performs incorrect cleanup of its internal subscription structures. This results in a heap...

CVE-2026-26447

Stomper 5e2741e is vulnerable to a Use-After-Free flaw in its internal subscription structures. An unauthenticated client can exploit this by repeatedly issuing SUBSCRIBE commands for the same destination over a single connection and subsequently closing that connection. This sequence causes inco...

PT-2026-82272

Stomper 5e2741e is vulnerable to Use-After-Free. When a single client repeatedly issues SUBSCRIBE commands for the same destination over one connection and then closes that connection, the broker performs incorrect cleanup of its internal subscription structures. This results in a heap...

Memory Allocation With Excessive Size Value

Apache ActiveMQ is vulnerable to Memory Allocation with Excessive Size Value. The vulnerability is due to improper validation of the encoded size of OpenWire message property maps during unmarshaling, which allows an authenticated attacker to send a crafted message with an excessively large size...

CVE-2026-47276

CVE-2026-47276 affects NanoMQ up to version 0.24.11: a NULL pointer dereference in properties_parse() when processing user_properties, allowing an authenticated attacker to crash the broker by sending a crafted POST to /api/v4/mqtt/publish with user_properties as a JSON array (strlen on a NULL it...

CVE-2026-47276: NULL Pointer Dereference

In nanomq versions 0.24.11 and earlier, a NULL pointer dereference in propertiesparse allows an authenticated attacker to crash the NanoMQ broker by sending a POST request to /api/v4/mqtt/publish with userproperties as a JSON array instead of a JSON object. The crash occurs because strlen is call...

Apache ActiveMQ resource management error vulnerability (CNVD-2026-28243)

ActiveMQ is an open-source messaging middleware from Apache, used for message queues and asynchronous communication. There is a resource management vulnerability in Apache ActiveMQ. The vulnerability arises due to the lack of validation of the encoding size values during the deserialization of...

Memory Allocation with Excessive Size Value

Overview org.apache.activemq:activemq-all is a package that puts together an ActiveMQ jar bundle. Affected versions of this package are vulnerable to Memory Allocation with Excessive Size Value via the unmarshalling process of OpenWire message property maps without proper size validation. An...

Allocation of Resources Without Limits or Throttling

Overview org.apache.activemq:apache-activemq is a Message Broker and Client implementations. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the OpenWire process. An attacker can exhaust system memory by repeatedly sending BrokerInfo...

CVE-2026-50734

Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ Client, Apache ActiveMQ, Apache ActiveMQ All. An unauthenticated network attacker can cause a broker DoS by sending a crafted WireFormatInfo frame with a malicious large size value. The value is not validate and causes t...

CVE-2026-53917 Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker: Unbounded memory allocation in OpenWire property unmarshalling

Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker. An authenticated user can cause a broker DoS by sending a crafted OpenWire Message with a large encoded size value for the map. OpenWire message...

CVE-2026-53917

Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker. An authenticated user can cause a broker DoS by sending a crafted OpenWire Message with a large encoded size value for the map. OpenWire message...

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-2026-22040

NanoMQ MQTT Broker NanoMQ is an all-around Edge Messaging Platform. In version 0.24.6, by generating a combined traffic pattern of high-frequency publishes and rapid reconnect/kick-out using the same ClientID and massive subscribe/unsubscribe jitter, it is possible to reliably trigger heap memory...

CVE-2026-22040 NanoMQ 0.24.6 Use-After-Free Leading to Heap Corruption and Broker Crash

NanoMQ MQTT Broker NanoMQ is an all-around Edge Messaging Platform. In version 0.24.6, by generating a combined traffic pattern of high-frequency publishes and rapid reconnect/kick-out using the same ClientID and massive subscribe/unsubscribe jitter, it is possible to reliably trigger heap memory...

CVE-2026-22040 NanoMQ 0.24.6 Use-After-Free Leading to Heap Corruption and Broker Crash

NanoMQ MQTT Broker NanoMQ is an all-around Edge Messaging Platform. In version 0.24.6, by generating a combined traffic pattern of high-frequency publishes and rapid reconnect/kick-out using the same ClientID and massive subscribe/unsubscribe jitter, it is possible to reliably trigger heap memory...