---
id: CVE-2026-77407
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, PlainAuth
  values defined in auth.go retain passwords as exported plaintext fields in
  Connection.Config.SASL after a successful PLAIN authentication handshake. The
  Connection…
severity: high
cvss: 7
cvssVector: 'CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:L/SA:L'
cwe:
  - CWE-316
  - CWE-256
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-2026-77407'
references:
  - url: >-
      https://github.com/rabbitmq/amqp091-go/commit/fa013b8447eb60988db3c9281ff6b981e4d2fb4f
    label: security-advisories@github.com
  - url: 'https://github.com/rabbitmq/amqp091-go/pull/350'
    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-27gv-rfvv-22mv
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77407'
  - url: 'https://github.com/advisories/GHSA-27gv-rfvv-22mv'
  - url: 'https://github.com/rabbitmq/amqp091-go'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-77407.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-77407'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2535487'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-77407'
  - url: 'https://access.redhat.com/errata/RHSA-2026:68290'
tags:
  - nvd
  - cve.org
  - ghsa
  - go
  - osv
  - csaf
  - vex
  - red-hat
epss: 0.00128
epssPercentile: 0.02018
aliases:
  - GHSA-27gv-rfvv-22mv
ecosystem: go
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-16T14:59:48.704679Z'
cvssSource: cna
scores:
  cna: 7
  vendor: 5.5
ingestedAt: '2026-09-16T14:57:28.050Z'
---

## Overview

RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, PlainAuth values defined in auth.go retain passwords as exported plaintext fields in Connection.Config.SASL after a successful PLAIN authentication handshake. The Connection.openComplete method in connection.go does not clear those values. Code with access to the Connection object, including reflective loggers, application performance monitoring agents, debugging utilities, and panic handlers, can traverse the configuration and expose the credentials to logs or state captures. The credential remains available for the lifetime of the connection instead of being cleared after authentication. 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-2026-77407)

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-27gv-rfvv-22mv

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Cryostat 4, Custom Metric Autoscaler operator for Red Hat Openshift, Multicluster Global Hub, OpenShift Serverless, Red Hat Advanced Cluster Management for Kubernetes 2, Red Hat OpenStack Platform 18.0, … · no fix planned: Red Hat Advanced Cluster Management for Kubernetes 2, Red Hat Quay 3, Cryostat 4, Custom Metric Autoscaler operator for Red Hat Openshift, … · updated 2026-09-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-77407.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)