---
id: CVE-2026-77404
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, URI.String in
  uri.go concatenates CertFile, KeyFile, CACertFile, and ServerName values
  directly into an AMQPS query string instead of encoding them as URL query
  parameters w…
severity: high
cvss: 8.7
cvssVector: 'CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L'
cwe:
  - CWE-116
  - CWE-140
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: '2026-09-23'
sourceUpdated: '2026-09-23T18:19:19.803'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77404'
references:
  - url: >-
      https://github.com/rabbitmq/amqp091-go/commit/743d488e46955fe7ffc55506fe2c401d01216783
    label: security-advisories@github.com
  - url: 'https://github.com/rabbitmq/amqp091-go/pull/352'
    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-465g-fh3v-9jw4
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77404'
  - url: 'https://github.com/advisories/GHSA-465g-fh3v-9jw4'
  - url: 'https://github.com/rabbitmq/amqp091-go'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-77404.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-77404'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2535489'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-77404'
  - url: 'https://access.redhat.com/errata/RHSA-2026:68290'
tags:
  - nvd
  - cve.org
  - ghsa
  - go
  - osv
  - csaf
  - vex
  - red-hat
epss: 0.00097
epssPercentile: 0.0085
aliases:
  - GHSA-465g-fh3v-9jw4
ecosystem: go
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-16T15:21:35.662559Z'
cvssSource: cna
scores:
  cna: 8.7
  vendor: 8.8
ingestedAt: '2026-09-16T14:57:28.038Z'
---

## Overview

RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, URI.String in uri.go concatenates CertFile, KeyFile, CACertFile, and ServerName values directly into an AMQPS query string instead of encoding them as URL query parameters with url.Values. If an application accepts a TLS asset path containing ampersand or equals delimiters and later reparses the serialized URI with ParseURI, the embedded delimiters can create or overwrite connection options, including paths to TLS certificate, key, or CA files. This can corrupt connection configuration or select unintended local cryptographic assets. 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-2026-77404)

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-465g-fh3v-9jw4

## Vendor advisories

- **Red Hat VEX** · Important · affected: Cryostat 4, Multicluster Global Hub, OpenShift Serverless, Red Hat Advanced Cluster Management for Kubernetes 2, Red Hat OpenStack Platform 18.0, Red Hat Quay 3 · no fix planned: Cryostat 4, Multicluster Global Hub, OpenShift Serverless, Red Hat Advanced Cluster Management for Kubernetes 2, … · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-77404.json)
- **RHSA-2026:68290** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-09-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:68290)