CVE-2026-77405: Rabbitmq AMQP091-Go

Critical severity, CVSS 9.4. EPSS: 0.3% chance of exploitation in the next 30 days.

RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, tlsConfigFromURI in uri.go creates tls.Config values without setting MinVersion to tls.VersionTLS12. Builds using a Go runtime whose default permits TLS 1.0 or TLS 1.1 can therefore negotiate an obsolete protocol version when connecting through an amqps URI. A network attacker able to influence TLS negotiation with such a legacy build may weaken transport protection for AMQP messages and credentials. This issue is fixed in version 1.13.0.

Affected products

• Rabbitmq AMQP091-Go: before 1.13.0 (fixed in 1.13.0)

Published 2026-09-16. Last modified 2026-09-24.