Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| rabbitmq | rabbitmq-java-client | < 5.36.0 | — |
| com.rabbitmq | amqp-client | < 5.36.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 13 | rabbitmq-java-client | No fix yet | — |
| Debian 12 | rabbitmq-java-client | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | rabbitmq-java-client | No fix yet | — |
| Ubuntu 26.04 LTS | rabbitmq-java-client | No fix yet | — |
| Ubuntu 24.04 LTS | rabbitmq-java-client | No fix yet | — |
| Ubuntu 22.04 LTS | rabbitmq-java-client | No fix yet | — |
| Ubuntu 20.04 LTS | rabbitmq-java-client | No fix yet | — |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | rabbitmq-java-client | No fix yet | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | cassandra-reaper | 5.0.1-r8 | — |
| Wolfi rolling | druid | 38.0.0-r3 | — |
| Wolfi rolling | logstash-9.3 +1 | No fix yet | — |
| Wolfi rolling | logstash-9.4 +1 | 9.4.7-r7 | — |
| Wolfi rolling | thingsboard-tb-node +1 | 4.3.1.5-r7 | — |
| Wolfi rolling | zipkin | 3.6.1-r37 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | com.rabbitmq:amqp-client | < 5.36.0 | 5.36.0 | GHSA-7822-rcf6-97fx |
Advisories 1
- WID-SEC-2026-3773 RabbitMQ Java Client: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 6, 2026
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