RabbitMQ amqp091-go up to 1.12.x Message Body Allocation channel.go Channel.recvContent allocation of resources

Summaryinfo

A vulnerability classified as problematic was found in RabbitMQ amqp091-go up to 1.12.x. The affected element is the function Channel.recvContent of the file channel.go of the component Message Body Allocation. The manipulation results in allocation of resources. This vulnerability is reported as CVE-2026-77410. The attack can be launched remotely. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic has been found in RabbitMQ amqp091-go up to 1.12.x. Affected is the function Channel.recvContent of the file channel.go of the component Message Body Allocation. The manipulation with an unknown input leads to a allocation of resources vulnerability. CWE is classifying the issue as CWE-770. The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor. This is going to have an impact on availability. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-77410 since 08/20/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 1.13.0 eliminates this vulnerability.

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Productinfo

Vendor

• RabbitMQ

Name

• amqp091-go

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12

Website

• Product: https://github.com/rabbitmq/amqp091-go/

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