---
id: CVE-2026-77410
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,
  Channel.recvContent in channel.go preallocates the message body slice with the
  uint64 ch.header.Size value supplied by an AMQP content header without capping
  the allocation …
severity: high
cvss: 8.9
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H'
cwe:
  - CWE-789
  - CWE-770
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-2026-77410'
references:
  - url: >-
      https://github.com/rabbitmq/amqp091-go/commit/91b65fa0096a99a580cf51a31b24028ff1c60382
    label: security-advisories@github.com
  - url: 'https://github.com/rabbitmq/amqp091-go/pull/346'
    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-r9c8-gcjp-xfwh
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-77410'
  - url: 'https://github.com/advisories/GHSA-r9c8-gcjp-xfwh'
  - url: 'https://github.com/rabbitmq/amqp091-go'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-77410.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-77410'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2535500'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-77410'
  - url: 'https://access.redhat.com/errata/RHSA-2026:68290'
tags:
  - nvd
  - cve.org
  - ghsa
  - go
  - osv
  - csaf
  - vex
  - red-hat
epss: 0.00524
epssPercentile: 0.41995
aliases:
  - GHSA-r9c8-gcjp-xfwh
ecosystem: go
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-16T15:40:59.489457Z'
cvssSource: cna
scores:
  cna: 8.9
  vendor: 7.5
ingestedAt: '2026-09-16T14:57:28.045Z'
---

## Overview

RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Channel.recvContent in channel.go preallocates the message body slice with the uint64 ch.header.Size value supplied by an AMQP content header without capping the allocation to the negotiated Connection.Config.FrameSize value. A malicious or compromised broker can send an extreme declared body size and cause the Go runtime to attempt a correspondingly large allocation before body data is received. The allocation can exhaust memory and terminate the client process. 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-2026-77410)

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-r9c8-gcjp-xfwh

## Vendor advisories

- **Red Hat VEX** · Important · affected: 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, Red Hat Quay 3 · no fix planned: Custom Metric Autoscaler operator for Red Hat Openshift, 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-2026-77410.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)