Improper Input Validation Affecting rabbitmq-java-client package, versions *
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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- published19 Aug 2026
- disclosed18 Aug 2026
Introduced: 18 Aug 2026
CVE-2026-61634 (opens in a new tab)How to fix?
There is no fixed version for Echo:latest rabbitmq-java-client.
NVD Description
Note: Versions mentioned in the description apply only to the upstream rabbitmq-java-client package and not the rabbitmq-java-client package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
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.
References
- https://advisory.echohq.com/cve/CVE-2026-61634
- 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