---
id: CVE-2026-79921
title: amqp091-go is a Go AMQP 0.9.1 client
summary: >-
  amqp091-go is a Go AMQP 0.9.1 client. Before version 1.13.0, a compromised or
  malicious AMQP broker can force the client to allocate resources for and
  process content body frames that exceed the negotiated frame_max limit. This
  can lead …
severity: high
cwe:
  - CWE-770
published: '2026-08-26'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:09:13.080'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-79921'
references:
  - url: >-
      https://github.com/rabbitmq/amqp091-go/commit/6beb7b51f59e46ddcf8066ad498dad32491d3be0
    label: security-advisories@github.com
  - url: 'https://github.com/rabbitmq/amqp091-go/pull/353'
    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-6c5v-hqjr-5xxp
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-79921'
  - url: 'https://github.com/rabbitmq/amqp091-go'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-79921.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-79921'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2524713'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-79921'
  - url: 'https://access.redhat.com/errata/RHSA-2026:62866'
  - url: 'https://access.redhat.com/errata/RHSA-2026:60854'
  - url: 'https://access.redhat.com/errata/RHSA-2026:67842'
  - url: 'https://access.redhat.com/errata/RHSA-2026:68515'
tags:
  - nvd
  - osv
  - go
  - csaf
  - vex
  - red-hat
epss: 0.0055
epssPercentile: 0.43632
ingestedAt: '2026-08-29T21:42:34.914Z'
aliases:
  - GHSA-6c5v-hqjr-5xxp
  - GO-2026-6372
ecosystem: go
vendor: rabbitmq
product: github.com/rabbitmq/amqp091-go
affected:
  - github.com/rabbitmq/amqp091-go < 1.13.0
patched:
  - github.com/rabbitmq/amqp091-go 1.13.0
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'
cvssSource: vendor
---

## Overview

amqp091-go is a Go AMQP 0.9.1 client. Before version 1.13.0, a compromised or malicious AMQP broker can force the client to allocate resources for and process content body frames that exceed the negotiated frame_max limit. This can lead to unexpected memory consumption or application-layer denial of service (DoS), bypassing the protocol's built-in framing constraints. Version 1.13.0 contains a fix. No known workarounds are available.

## Remediation

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

## Package advisory (CVE-2026-79921)

Affected packages:

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

Patched in:

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

Source: https://osv.dev/vulnerability/GHSA-6c5v-hqjr-5xxp

## Vendor advisories

- **RHSA-2026:62866** · Red Hat · fixed in: Custom Metric Autoscaler 2.19 · released 2026-09-02 · [advisory](https://access.redhat.com/errata/RHSA-2026:62866)
- **RHSA-2026:60854** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-08-29 · [advisory](https://access.redhat.com/errata/RHSA-2026:60854)
- **Red Hat VEX** · Important · affected: OpenShift Serverless, Red Hat Advanced Cluster Management for Kubernetes 2, Red Hat OpenStack Platform 18.0, Red Hat Quay 3 · no fix planned: OpenShift Serverless, Red Hat Advanced Cluster Management for Kubernetes 2, Red Hat OpenStack Platform 18.0, Red Hat Quay 3 · updated 2026-09-24 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-79921.json)
- **RHSA-2026:67842** · Red Hat · fixed in: Multicluster Global Hub 1.7.3 · released 2026-09-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:67842)
- **RHSA-2026:68515** · Red Hat · fixed in: Multicluster Global Hub 1.8.2 · released 2026-09-17 · [advisory](https://access.redhat.com/errata/RHSA-2026:68515)