High 8.2Published Sep 16, 2026

CVE-2026-77409RabbitMQ amqp091-go: Denial of Service via Synchronous Event Channel Blocking

Updated under an hour ago (2026-10-19 08:50 UTC)

Does this affect you?

It affects rabbitmq amqp091-go. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

Do this next

Start free and add your stack

Free account, 1 product

Every CVE for rabbitmq amqp091-go

Exploited in the last 30 days

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.

CVSS: 8.2 HIGH (v4.0, CNA)CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L
Weakness (CWE): CWE-770
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Awaiting Analysis
Record last updated: Sep 18, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

rabbitmq amqp091-go rabbitmq:amqp091_go (from the name)	before 1.13.0	CNA record

References

https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-wxx3-cj7g-w73jx-refsource-confirm
https://github.com/rabbitmq/amqp091-go/pull/349x-refsource-misc
https://github.com/rabbitmq/amqp091-go/commit/5b0ccbb8d7bc3dfa18129d9b0f9256d656809494x-refsource-misc
https://github.com/rabbitmq/amqp091-go/releases/tag/v1.13.0x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.