---
id: CVE-2026-77405
title: RabbitMQ amqp091-go is a Go AMQP 0.9.1 client
summary: >-
  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 t…
severity: critical
cvss: 9.4
cvssVector: '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'
cwe:
  - CWE-326
  - CWE-316
vendor: rabbitmq
product: amqp091-go
affected:
  - amqp091-go < 1.13.0
patched:
  - github.com/rabbitmq/amqp091-go 1.13.0
published: '2026-09-16'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T21:16:28.120'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77405'
references:
  - url: >-
      https://github.com/rabbitmq/amqp091-go/commit/c9fd433ecac2e557919e51acc9d809390c402c6e
    label: security-advisories@github.com
  - url: 'https://github.com/rabbitmq/amqp091-go/pull/355'
    label: security-advisories@github.com
  - url: 'https://github.com/rabbitmq/amqp091-go/releases/tag/v1.13.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-33mj-cw25-m34h
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77405'
  - url: 'https://github.com/advisories/GHSA-33mj-cw25-m34h'
  - url: 'https://github.com/rabbitmq/amqp091-go'
tags:
  - nvd
  - cve.org
  - ghsa
  - go
  - osv
epss: 0.00282
epssPercentile: 0.1844
aliases:
  - GHSA-33mj-cw25-m34h
ecosystem: go
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-09-18T17:59:04.727483Z'
cvssSource: cna
ingestedAt: '2026-09-16T14:57:28.034Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-77405)

Affected packages:

- `github.com/rabbitmq/amqp091-go < 1.13.0`

Patched in:

- `github.com/rabbitmq/amqp091-go 1.13.0`

Source: https://github.com/advisories/GHSA-33mj-cw25-m34h