CVE-2026-63335Medium▾ SunlitThe RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes. Prior to 5.31.0, inbound AMQP command assembly in src/main/java/com/rabbitmq/client/impl/CommandAssembler.java proces…
▾ Sunlit zone — Low / medium · no exploitation signal
impact 27.5 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 19.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Last analysed / modified upstream
0.3% → 0.4%
The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes. Prior to 5.31.0, inbound AMQP command assembly in src/main/java/com/rabbitmq/client/impl/CommandAssembler.java processes a content-bearing method and header whose remainingBodyBytes value is smaller than a following AMQP.FRAME_BODY payload. CommandAssembler.consumeBodyFrame subtracts the peer-controlled payload length before validating that it fits, drives remainingBodyBytes negative, and throws a raw UnsupportedOperationException instead of MalformedFrameException. A malicious or compromised broker peer can send this malformed sequence on an open nonzero channel to terminate frame processing and close the client connection, causing denial of service for work using that connection. This issue is fixed in version 5.31.0.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
com.rabbitmq:amqp-client <= 5.30.0Patched in:
com.rabbitmq:amqp-client 5.31.0Connected by shared product, vendor, weakness, or advisory.
CVE-2026-61634LowThe RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes
CVE-2026-69220HighThe RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes
CVE-2026-69219HighThe RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes
CVE-2026-63337HighThe RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes
CVE-2026-63336MediumThe RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes
CVE-2026-75516High· 8.7The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes