Vulnerability Description
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.
Related Weaknesses (CWE)
References
- https://github.com/rabbitmq/amqp091-go/commit/6959423aa2784a1971e399175dfb2065de
- https://github.com/rabbitmq/amqp091-go/pull/354
- https://github.com/rabbitmq/amqp091-go/releases/tag/v1.13.0
- https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-j497-x9hr-x34x
FAQ
What is CVE-2026-77408?
CVE-2026-77408 is a documented vulnerability. 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 lo...
How severe is CVE-2026-77408?
CVSS scoring is not yet available for CVE-2026-77408. Check NVD for updates.
Is there a patch for CVE-2026-77408?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.