Improper Certificate Validation Affecting com.rabbitmq:amqp-client package, versions [,5.33.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-JAVA-COMRABBITMQ-18958662
- published19 Aug 2026
- disclosed18 Aug 2026
- creditUnknown
Introduced: 18 Aug 2026
NewCVE-2026-63336 (opens in a new tab)How to fix?
Upgrade com.rabbitmq:amqp-client to version 5.33.0 or higher.
Overview
Affected versions of this package are vulnerable to Improper Certificate Validation via the ConnectionFactory.useSslProtocol() and ConnectionFactory.useSslProtocol(String) paths in ConnectionFactory.java. An attacker can intercept and tamper with AMQP traffic by presenting any certificate during a TLS connection setup. Because the default SSL setup trusts every server certificate and does not verify the broker hostname, a man-in-the-middle can impersonate the RabbitMQ server and expose or alter client communications, including credentials and application messages.