---
id: "CVE-2026-77405"
kind: "vulnerability"
aliases: ["CVE-2026-77405", "GHSA-33mj-cw25-m34h", "GO-2026-6492"]
title: "RabbitMQ amqp091-go: Missing Explicit TLS Minimum Version Configuration In URI Parser in github.com/rabbitmq/amqp091-go"
severity: "critical"
cvss: 9.4
epss: 0.00282
exploited: false
status: "open"
category: "package"
products: [{"name": "github.com/rabbitmq/amqp091-go", "fixed": ["1.13.0"], "affected": "< 1.13.0", "ecosystem": "go"}]
ecosystems: ["go"]
tags: ["amqp", "amqps", "go", "package", "rabbitmq"]
not_affected_if: ["no-amqps-uri", "plain-amqp-only", "version-1.13.0-or-later"]
published_at: "2026-09-16T15:17:47+00:00"
first_seen_at: "2026-10-23T19:13:08+00:00"
updated_at: "2026-10-23T21:43:45+00:00"
sources: [{"source": "govuln", "url": "https://pkg.go.dev/vuln/GO-2026-6492", "first_seen_at": "2026-10-23T19:13:08+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-77405", "first_seen_at": "2026-10-23T19:13:43+00:00"}, {"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-77405", "first_seen_at": "2026-10-23T19:35:23+00:00"}]
---

# RabbitMQ amqp091-go: Missing Explicit TLS Minimum Version Configuration In URI Parser in github.com/rabbitmq/amqp091-go

The amqp091-go Go client builds TLS configs for amqps:// URIs without a minimum TLS version, so on Go runtimes whose default allows TLS 1.0 or 1.1 the connection can fall back to those obsolete protocols. A network attacker able to influence the TLS handshake could weaken protection of AMQP messages and credentials.

_Summary, check and fix written by a model from the sources; labelled as such._

## Affected

- go:github.com/rabbitmq/amqp091-go affected < 1.13.0 fixed 1.13.0

## How to check

Run go list -m github.com/rabbitmq/amqp091-go in the project and check whether the version is below 1.13.0.
Search for amqps:// connection strings in the code and config that use this library.

## Fix

Upgrade github.com/rabbitmq/amqp091-go to 1.13.0 or later.
Until then, set an explicit MinVersion of tls.VersionTLS12 on the TLS config used for the connection.

## Timeline

- 2026-10-23T19:13:08+00:00 govuln https://pkg.go.dev/vuln/GO-2026-6492
- 2026-10-23T19:13:43+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-77405
- 2026-10-23T19:35:23+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-77405

## From the sources

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.

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