CVE-2026-67405

A flaw was found in RabbitMQ's Web-MQTT and Web-STOMP handlers. These handlers do not properly validate the Origin header during a WebSocket upgrade. When specific non-default configurations are enabled, such as usehttpauth=true for Web-STOMP or sslcertlogin=true for both plugins, an attacker can...

UBUNTU-CVE-2026-67232

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, The cowboy WebSocket options at line 117 set compress = true, enabling RFC 7692 permessage-deflate negotiation. The handler does not set maxframesize, so cowboy's default of infinity applies...

CVE-2026-67232

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, The cowboy WebSocket options at line 117 set compress = true, enabling RFC 7692 permessage-deflate negotiation. The handler does not set maxframesize, so cowboy's default of infinity applies...

CVE-2026-67405

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, Neither the Web-MQTT handler deps/rabbitmqwebmqtt/src/rabbitwebmqtthandler.erl:104 nor the Web-STOMP handler deps/rabbitmqwebstomp/src/rabbitwebstomphandler.erl:102 validates the Origin head...

Linux Distros Unpatched Vulnerability : CVE-2026-67232

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, The cowboy WebSocket options at line 117 set compress...

Linux Distros Unpatched Vulnerability : CVE-2026-67405

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, Neither the Web-MQTT handler...

DEBIAN-CVE-2026-67405

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, Neither the Web-MQTT handler deps/rabbitmqwebmqtt/src/rabbitwebmqtthandler.erl:104 nor the Web-STOMP handler deps/rabbitmqwebstomp/src/rabbitwebstomphandler.erl:102 validates the Origin head...

DEBIAN-CVE-2026-67232

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, The cowboy WebSocket options at line 117 set compress = true, enabling RFC 7692 permessage-deflate negotiation. The handler does not set maxframesize, so cowboy's default of infinity applies...

CVE-2026-67232

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, The cowboy WebSocket options at line 117 set compress = true, enabling RFC 7692 permessage-deflate negotiation. The handler does not set maxframesize, so cowboy's default of infinity applies...

CVE-2026-67405

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, Neither the Web-MQTT handler deps/rabbitmqwebmqtt/src/rabbitwebmqtthandler.erl:104 nor the Web-STOMP handler deps/rabbitmqwebstomp/src/rabbitwebstomphandler.erl:102 validates the Origin head...

CVE-2026-67232

RabbitMQ is vulnerable to a decompression bomb attack in the rabbitmq_web_mqtt plugin prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0. The flaw exists because the cowboy WebSocket handler enables permessage-deflate negotiation without setting a max_frame_size, allowing cowlib to call ...

EUVD-2026-85657

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, The cowboy WebSocket options at line 117 set compress = true, enabling RFC 7692 permessage-deflate negotiation. The handler does not set maxframesize, so cowboy's default of infinity applies...

CVE-2026-67232 RabbitMQ: Web-MQTT decompression bomb

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, The cowboy WebSocket options at line 117 set compress = true, enabling RFC 7692 permessage-deflate negotiation. The handler does not set maxframesize, so cowboy's default of infinity applies...

CVE-2026-67232

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, The cowboy WebSocket options at line 117 set compress = true, enabling RFC 7692 permessage-deflate negotiation. The handler does not set maxframesize, so cowboy's default of infinity applies...

CVE-2026-67232 RabbitMQ: Web-MQTT decompression bomb

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, The cowboy WebSocket options at line 117 set compress = true, enabling RFC 7692 permessage-deflate negotiation. The handler does not set maxframesize, so cowboy's default of infinity applies...

CVE-2026-67232 RabbitMQ: Web-MQTT decompression bomb

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, The cowboy WebSocket options at line 117 set compress = true, enabling RFC 7692 permessage-deflate negotiation. The handler does not set maxframesize, so cowboy's default of infinity applies...

CVE-2026-67405

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, Neither the Web-MQTT handler deps/rabbitmqwebmqtt/src/rabbitwebmqtthandler.erl:104 nor the Web-STOMP handler deps/rabbitmqwebstomp/src/rabbitwebstomphandler.erl:102 validates the Origin head...

CVE-2026-67405 RabbitMQ: CSWSH on Web-STOMP / Web-MQTT (no Origin validation)

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, Neither the Web-MQTT handler deps/rabbitmqwebmqtt/src/rabbitwebmqtthandler.erl:104 nor the Web-STOMP handler deps/rabbitmqwebstomp/src/rabbitwebstomphandler.erl:102 validates the Origin head...

CVE-2026-67405

RabbitMQ messaging and streaming broker versions prior to 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0 are vulnerable to a Cross-Site WebSocket Hijacking (CSWH) attack. The Web-MQTT handler and Web-STOMP handler fail to validate the Origin header during a WebSocket upgrade. If non-default configurat...

CVE-2026-67405 RabbitMQ: CSWSH on Web-STOMP / Web-MQTT (no Origin validation)

RabbitMQ is a messaging and streaming broker. Prior to versions 3.13.15, 4.0.20, 4.1.11, 4.2.6, and 4.3.0, Neither the Web-MQTT handler deps/rabbitmqwebmqtt/src/rabbitwebmqtthandler.erl:104 nor the Web-STOMP handler deps/rabbitmqwebstomp/src/rabbitwebstomphandler.erl:102 validates the Origin head...