CVE-2026-77408: critical vulnerability in rabbitmq amqp091-go
RabbitMQ amqp091-go: Silent Data Truncation and State Corruption via Shortstr Integer Overflow
Published
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28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.1epss 0.5%
RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, the writeShortstr function in write.go casts the byte length of AMQP shortstr property values to uint8 without first rejecting values longer than 255 bytes. An application that accepts an oversized CorrelationId, ReplyTo, MessageId, Expiration, UserId, AppId, ContentType, ContentEncoding, or Type value can therefore serialize a wrapped length and only a truncated prefix, while reporting no error. The resulting silent metadata corruption can break request and reply correlation, routing, tracing, and downstream message processing. This issue is fixed in version 1.13.0.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:L
Affected products
rabbitmq · amqp091-goRelated CVEs — rabbitmq amqp091-go
In the same product, most dangerous first.
CVE-2026-79921HIGHamqp091-go has a Potential Memory Exhaustion/Protocol Violation via Broker-Controlled Oversized PayloadEPSS 0.5%CVE-2026-77409HIGHRabbitMQ amqp091-go: Denial of Service via Synchronous Event Channel BlockingEPSS 0.5%CVE-2026-77411CRITICALRabbitMQ amqp091-go: Protocol Desynchronization and Frame Injection via Integer Overflow in readLongstrEPSS 0.5%CVE-2026-77412HIGHRabbitMQ amqp091-go: Denial of Service via Malicious Field Length in AMQP ClientEPSS 0.5%CVE-2026-77410HIGHRabbitMQ amqp091-go: Resource Exhaustion (OOM) via Unbounded Body Buffer AllocationEPSS 0.5%CVE-2026-77406HIGHRabbitMQ amqp091-go: Consumer Message Flooding via Signed-to-Unsigned Integer Casting in Qos ConfigurationEPSS 0.5%