CVE-2026-61634

The RabbitMQ Java client library allows Java and JVM-based applications to connect to and interact with RabbitMQ nodes. Prior to 5.33.0, the AMQP connection tuning path records the negotiated AMQP frame_max value, but src/main/java/com/rabbitmq/client/impl/SocketFrameHandler.java and NettyFrameHandlerFactory continue to validate broker-controlled frame payload lengths against maxInboundMessageBodySize because the negotiated limit is not applied consistently through setMaxInboundFramePayloadSize. A malicious or compromised broker can send a method frame larger than the negotiated frame_max during or after connection establishment, causing the client to allocate and decode a protocol-invalid frame instead of rejecting it with MalformedFrameException. The protocol violation can disrupt the affected connection and cause client-side denial of service. This issue is fixed in version 5.33.0.

CVSS

No CVSS.

References

Link	Resource
https://github.com/rabbitmq/rabbitmq-java-client/commit/08790f09686173eb17b48d08a25edcb32e71a591
https://github.com/rabbitmq/rabbitmq-java-client/commit/b491075f42e89967610c40beded68d3680cfd472
https://github.com/rabbitmq/rabbitmq-java-client/pull/1994
https://github.com/rabbitmq/rabbitmq-java-client/pull/1995
https://github.com/rabbitmq/rabbitmq-java-client/releases/tag/v5.33.0
https://github.com/rabbitmq/rabbitmq-java-client/security/advisories/GHSA-5xwg-cfvj-gff5

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-18 17:16

Updated : 2026-09-10 20:30

NVD link : CVE-2026-61634

Mitre link : CVE-2026-61634

CVE.ORG link : CVE-2026-61634

JSON object : View

Products Affected

No product.

CWE

CWE-20

Improper Input Validation

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