Description
The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes. Prior to 5.33.0, com.rabbitmq.client.ConnectionFactory.useSslProtocol() and ConnectionFactory.useSslProtocol(String) configure com.rabbitmq.client.TrustEverythingTrustManager and leave hostname verification disabled, causing arbitrary server certificates, including self-signed certificates, to be accepted. A network attacker able to intercept a TLS connection can impersonate the RabbitMQ broker, read protected AMQP traffic, and modify traffic without certificate or hostname validation. The fix changes the production TLS helpers to use the JVM default trust store and enables hostname verification, while retaining an explicitly named development-only no-verification helper. This issue is fixed in version 5.33.0.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| rabbitmq | rabbitmq-java-client | < 5.33.0 | — |
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 | 5.0.0-r9 | — |
| Wolfi rolling | druid | 37.0.0-r54 | — |
| Wolfi rolling | logstash-9.3 +1 | No fix yet | — |
| Wolfi rolling | logstash-9.4 +1 | 9.4.5-r3 | — |
| Wolfi rolling | thingsboard-tb-node +1 | 4.3.1.3-r23 | — |
| Wolfi rolling | zipkin | 3.6.1-r22 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | com.rabbitmq:amqp-client | < 5.33.0 | 5.33.0 | GHSA-5m9f-rphj-c435 |
Advisories 1
- WID-SEC-2026-2921 RabbitMQ Java Client: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 18, 2026
References
- https://github.com/rabbitmq/rabbitmq-java-client/security/advisories/GHSA-5m9f-rphj-c435
- https://github.com/rabbitmq/rabbitmq-java-client/pull/1999
- https://github.com/rabbitmq/rabbitmq-java-client/pull/2001
- https://github.com/rabbitmq/rabbitmq-java-client/commit/1e7deb2e6020c9793a81385a53ea378ec63b9339
- https://github.com/rabbitmq/rabbitmq-java-client/commit/a4bf571dd368765baaa9cecfae68ce09f1bdcc01
- https://github.com/rabbitmq/rabbitmq-java-client/releases/tag/v5.33.0