---
cve: "CVE-2026-77405"
severity: "CRITICAL"
cvss: 9.4
epss: "0.2%"
vendor: "rabbitmq"
kev: false
exploited: false
published: "2026-09-16 14:42:08"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T21:46:55+02:00"
---

# CVE-2026-77405

> 9.4 CRITICAL · 🧪 PoC

## Beschreibung

RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, tlsConfigFromURI in uri.go creates tls.Config values without setting MinVersion to tls.VersionTLS12. Builds using a Go runtime whose default permits TLS 1.0 or TLS 1.1 can therefore negotiate an obsolete protocol version when connecting through an amqps URI. A network attacker able to influence TLS negotiation with such a legacy build may weaken transport protection for AMQP messages and credentials. This issue is fixed in version 1.13.0.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:L/SA:N
```

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

## Patch verfügbar (OSV)

- c9fd433ecac2e557919e51acc9d809390c402c6e (Commit)
- d26d57e952cc61554ea9c54bd676c8f40ed0d84d (Commit)

## Referenzen

- <https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-33mj-cw25-m34h>
- <https://github.com/rabbitmq/amqp091-go/pull/355>
- <https://github.com/rabbitmq/amqp091-go/commit/c9fd433ecac2e557919e51acc9d809390c402c6e>
- <https://github.com/rabbitmq/amqp091-go/releases/tag/v1.13.0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-77405) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_