CVE-2026-41043

The processControlCommand function in broker/TransportConnection.java in Apache ActiveMQ before version 5.11.0 allows remote attackers to cause a denial of service (shutdown) via a shutdown command.

A vulnerability in Apache ActiveMQ allows an authenticated attacker to bypass the fix for CVE-2026-34197 by adding a connector using HTTP Discovery transport. The attacker can use a malicious HTTP endpoint returning a VM transport, leading to loading a remote Spring XML application context and arbitrary code execution on the broker's JVM.

Apache ActiveMQ 5.x before 5.13.0 does not restrict the classes that can be serialized in the broker, allowing remote attackers to execute arbitrary code via a crafted serialized Java Message Service (JMS) ObjectMessage object.

Improper input validation in TopicRegion in Apache ActiveMQ, Apache ActiveMQ Broker, and Apache ActiveMQ All on all platforms. An authenticated client can spoof clientId when removing a durable topic subscription.

Improper authorization in Apache ActiveMQ allows an authenticated low-privilege user to bypass per-destination write ACLs by sending to a temporary composite destination, bypassing the authorization check.

Apache ActiveMQ (versions before 5.19.9 and 6.0.0 before 6.2.8) has a vulnerability in the AMQP NIO component. A remote unauthenticated attacker can send a frame with a specific size, causing NIO threads to die. Rapid repetition can exhaust the NIO thread pool, leading to denial of service.

A missing authorization vulnerability was found in Apache ActiveMQ for temporary destinations. Temporary destinations are expected to be isolated to the connection that created them, but the isolation is only checked on the client side, allowing a different connection to consume from another connection's temporary destination.

A vulnerability in Apache ActiveMQ allows an authenticated user to cause a DoS attack on the broker by sending a crafted OpenWire message with an excessive map size value. The lack of size validation during deserialization of message property maps can trigger OOM and crash the broker.

A vulnerability in Apache ActiveMQ allows an unauthenticated client to send non-terminating header bytes via STOMP NIO, causing unlimited buffering and JVM heap exhaustion.