Description
RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, Channel.Qos in channel.go accepts negative prefetchCount and prefetchSize integers and casts them directly to uint16 and uint32 fields in the basic.qos method because validateQos is absent. Values such as -1 therefore wrap to 65535 or 4294967295 instead of being rejected. An application that permits untrusted configuration of these Qos values can unintentionally request extremely large prefetch limits, allowing a broker to deliver enough queued messages to exhaust client memory and disrupt processing. This issue is fixed in version 1.13.0.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| rabbitmq | amqp091-go | < 1.13.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | golang-github-rabbitmq-amqp091-go | 1.14.0-1 | — |
| Debian 13 | golang-github-rabbitmq-amqp091-go | No fix yet | — |
| Debian 12 | golang-github-rabbitmq-amqp091-go | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | golang-github-rabbitmq-amqp091-go | No fix yet | — |
| Ubuntu 26.04 LTS | golang-github-rabbitmq-amqp091-go | No fix yet | — |
| Ubuntu 24.04 LTS | golang-github-rabbitmq-amqp091-go | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Hardened Images 1 | opentelemetry-collector-contrib | 0.161.0-0.1.hum1 | RHSA-2026:68290 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | keda | No fix yet | — |
| Azure Linux 3 | telegraf | 1.31.0-34 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/rabbitmq/amqp091-go | < 1.13.0 | 1.13.0 | GHSA-rm6m-hrcw-jw33 |
Advisories 1
- RHSA-2026:68290 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 20, 2026