CVE-2026-106122

The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes. Prior to 5.36.0, ValueReader.readShortstr decodes malformed UTF-8 bytes into replacement characters that can re-encode beyond the AMQP shortstr limit enforced by ValueWriter.writeShortstr. An attacker who can submit an RPC message with a malformed echoed property can cause reply publication in RpcServer.mainloop() or tutorial-style consumers to throw an unchecked exception before acknowledgement. The broker requeues the message, allowing the same message to disable replacement consumers until the queue is purged. This issue is fixed in version 5.36.0.

Score

CVSS 3.1 7.5 High

Status

Analyzed - security-advisories@github.com

Published

2026-10-06

Last modified

2026-10-09

Weaknesses

CWE-172, CWE-248

Affected products

• Amqp-client (Com.rabbitmq)
• Rabbitmq-java-client (Rabbitmq)
• Rabbitmq Java Client (Vmware)

References

• https://github.com/rabbitmq/rabbitmq-java-client/security/advisories/GHSA-7822-rcf6-97fx
• https://github.com/rabbitmq/rabbitmq-java-client/pull/2065
• https://github.com/rabbitmq/rabbitmq-java-client/commit/b8bd750fa8c90690e859b18d6343b34421309020
• https://github.com/rabbitmq/rabbitmq-java-client/releases/tag/v5.36.0