RabbitMQ amqp091-go: Protocol Desynchronization and Frame Injection via Integer Overflow in readLongstr

Date Sep 17, 2026

Type Vendor advisory

Signal Critical vendor advisory

Vendor / Product Go · github.com/rabbitmq/amqp091-go

CVE CVE-2026-77411

Critical vendor advisory CVE-2026-77411

Summary

RabbitMQ amqp091-go: Protocol Desynchronization and Frame Injection via Integer Overflow in readLongstr

Why it matters

GitHub has published a reviewed security advisory for github.com/rabbitmq/amqp091-go. Prioritize it with other application dependency updates.

Operator check

Check whether github.com/rabbitmq/amqp091-go is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available. CVSS score: 9.5.

Sources

GitHub Advisory GHSA-c5pq-fr2g-9jpf NVD — CVE-2026-77411 Source reference

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

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