---
cve: "CVE-2026-77409"
severity: "HIGH"
cvss: 8.2
epss: "32.3%"
vendor: "rabbitmq"
kev: false
exploited: false
published: "2026-09-16 15:17:50"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-19T19:41:05+02:00"
---

# CVE-2026-77409

> 8.2 HIGH · 🧪 PoC

## Beschreibung

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-Vektor

```
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
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 5b0ccbb8d7bc3dfa18129d9b0f9256d656809494 (Commit)
- d26d57e952cc61554ea9c54bd676c8f40ed0d84d (Commit)

## Referenzen

- <https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-wxx3-cj7g-w73j>
- <https://github.com/rabbitmq/amqp091-go/pull/349>
- <https://github.com/rabbitmq/amqp091-go/commit/5b0ccbb8d7bc3dfa18129d9b0f9256d656809494>
- <https://github.com/rabbitmq/amqp091-go/releases/tag/v1.13.0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-77409) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_