PT-2026-77209
CVE-2026-63335
·
Published
2026-08-18
·
Updated
2026-10-30
Description by
CVSS 4.0
6.3
MediumMetricsAV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Name of the Vulnerable Software and Affected Versions
RabbitMQ Java client library versions prior to 5.31.0
Description
Inbound AMQP command assembly in
src/main/java/com/rabbitmq/client/impl/CommandAssembler.java processes a content-bearing method and header where the remainingBodyBytes value is smaller than a subsequent AMQP.FRAME BODY payload. The consumeBodyFrame() function subtracts the peer-controlled payload length before validation, causing remainingBodyBytes to become negative and triggering a raw UnsupportedOperationException instead of a 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, resulting in a denial of service.Recommendations
Update to version 5.31.0.
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