What’s Vulnerable › Vulnerabilities

CVE-2026-106123: RabbitMQ Java client: plaintext broker credentials leaked in exception message from ConnectionFactoryConfigurator.load()

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-10-06 · updated 2026-10-19
• Weakness: CWE-209

Description

The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes. Prior to 5.35.0, ConnectionFactoryConfigurator.load() includes the raw uri value in wrapped exceptions when AMQP URI parsing fails. Because the URI may contain a plaintext username and password, startup logs, application performance monitoring systems, CI logs, and copied stack traces can disclose broker credentials to users who should not have access to them. This issue is fixed in version 5.35.0.

Affected products

• rabbitmq-java-client: before 5.35.0 — fixed in 5.35.0
• com.rabbitmq amqp-client: before 5.35.0
• rabbitmq-java-client: before 5.35.0

How to fix

Upgrade to a fixed version: rabbitmq-java-client 5.35.0. Check the vendor advisory for mitigations.

References

• https://github.com/rabbitmq/rabbitmq-java-client/commit/daca1875cdb8b8c0acce78f71103b21a05478446
• https://github.com/rabbitmq/rabbitmq-java-client/pull/2052
• https://github.com/rabbitmq/rabbitmq-java-client/releases/tag/v5.35.0
• https://github.com/rabbitmq/rabbitmq-java-client/security/advisories/GHSA-h6w7-qmcm-q6xr

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