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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-63335 Detail

Description

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  GitHub, Inc.
CVSS-B 6.3 MEDIUM
Vector:  CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/rabbitmq/rabbitmq-java-client/commit/31735344d9f9dfc53740b67f06e560e8846b9322 GitHub, Inc.
https://github.com/rabbitmq/rabbitmq-java-client/commit/abd6d60d4e2bfc1a327dc90ab246b2e8aca1f33b GitHub, Inc.
https://github.com/rabbitmq/rabbitmq-java-client/pull/1959 GitHub, Inc.
https://github.com/rabbitmq/rabbitmq-java-client/pull/1960 GitHub, Inc.
https://github.com/rabbitmq/rabbitmq-java-client/releases/tag/v5.31.0 GitHub, Inc.
https://github.com/rabbitmq/rabbitmq-java-client/security/advisories/GHSA-qx7j-jv8m-fppr CISA-ADP, GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-20 Improper Input Validation GitHub, Inc.  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-63335
NVD Published Date:
08/18/2026
NVD Last Modified:
08/18/2026
Source:
GitHub, Inc.