GO · SEPTEMBER 2026 · EARLY WARNING

AMQP Client TLS Configuration Weakness: What Software Engineers Need to Know

EARLY WARNING · UNCONFIRMED. This page describes a developing threat that 0Day surfaced from early signals and has not yet independently confirmed. Details may change. Always verify against the primary sources before acting.
Severity
HIGH
Affected component
amqp091-go (go)
Affected versions
< 1.13.0
Patched version
Not yet available
GHSA-33MJ-CW25-M34H

An early warning has been issued regarding a structural security weakness in the AMQP client's TLS configuration generator. This issue affects the amqp091-go library versions prior to 1.13.0.

What happened

An early warning has been issued for a critical security weakness in the AMQP client's TLS configuration generator. The amqp091-go library, used for AMQP communication in Go applications, is affected. The weakness lies in the library's initialization of the TLS configuration without explicitly defining the minimum TLS version. This could potentially allow negotiation of insecure TLS protocols, posing a significant security risk.

The affected versions of the amqp091-go library are those prior to 1.13.0. It is crucial for software engineers to assess whether their applications are using an affected version of this library. If so, they should consider upgrading to a version that explicitly sets the minimum TLS version in the TLS configuration to mitigate the risk.

What to do about it

How 0Day would have caught this

MATCHED TO YOUR ACTUAL DEPENDENCY GRAPH0Day matches every incoming threat signal against your GitHub organization’s full dependency graph, including transitive dependencies. If amqp091-go is anywhere in your dependency tree, the engineers who own the affected repositories get a push alert the moment it is flagged — no manual audit to remember to run.

Read how this differs from waiting on a scanner to catch a known advisory, or see the exact, read-only access 0Day needs to do this for an organization.

Frequently asked questions

Am I affected?

You are affected if your application uses the amqp091-go library and the version is prior to 1.13.0.

What should I do right now?

Check the version of amqp091-go your application uses. If it is prior to 1.13.0, upgrade to version 1.13.0 or later.

Is there an official fix available?

Yes, version 1.13.0 of the amqp091-go library is the patched version.

Should I be concerned about exploitation in the wild?

There is no confirmed report of this vulnerability being exploited in the wild at this time. However, it is still critical to address the vulnerability to prevent potential exploitation.

Sources

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