RabbitMQ amqp091-go: Denial of Service via Synchronous Event Channel Blocking
CVE-2026-77409 is fixed in golang-github-rabbitmq-amqp091-go on 1 platform by DEBIAN-CVE-2026-77409 (version 1.14.0-1), released September 18, 2026. It is not reported as exploited. Patch Radar priority: Routine.
RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Channel.dispatch in channel.go, confirms.confirm in confirms.go, and Connection.dispatch0 in connection.go synchronously send publisher confirmations, flow-control events, consumer cancellations, returned messages, including NotifyConfirm events and connection block notifications, to application-provided channels. If a listener channel is unbuffered, full, or not drained promptly, the sole reader goroutine blocks and stops processing frames, acknowledgments, deliveries, and heartbeats. Broker-driven event bursts can therefore cause connection stalls, missed heartbeats, deadlocks, and disconnection. This issue is fixed in version 1.13.0.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| golang-github-rabbitmq-amqp091-go · Debian 14 | 1.14.0-1 | DEBIAN-CVE-2026-77409 | Sep 18, 2026 |
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