CVE-2026-77407 RabbitMQ amqp091-go: Plaintext Credential Exposure via Exported PLAIN Authentication Struct Fields
Attackers with access to application memory or logs can extract RabbitMQ credentials because the Go client library fails to clear plaintext passwords after authentication.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-77407?
CVE-2026-77407 is a high-severity vulnerability in rabbitmq amqp091-go, published on 16 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
RabbitMQ amqp091-go is a Go AMQP 0.9.1 client. Prior to 1.13.0, PlainAuth values defined in auth.go retain passwords as exported plaintext fields in Connection.Config.SASL after a successful PLAIN authentication handshake. The Connection.openComplete method in connection.go does not clear those values. Code with access to the Connection object, including reflective loggers, application performance monitoring agents, debugging utilities, and panic handlers, can traverse the configuration and expose the credentials to logs or state captures. The credential remains available for the lifetime of the connection instead of being cleared after authentication. This issue is fixed in version 1.13.0.
Weakness: CWE-316
Which versions are affected by CVE-2026-77407?
3 open source packages ship an affected version, including github.com/rabbitmq/amqp091-go.
| Package | Affected | Fixed in |
|---|---|---|
github.com/rabbitmq/amqp091-go Go | All versions | 1.13.0 |
github.com/rabbitmq/amqp091-go Go | All versions | 1.13.0 |
github.com/rabbitmq/amqp091-go Go | All versions | 1.13.0 |
How do I fix CVE-2026-77407?
Upgrade github.com/rabbitmq/amqp091-go to 1.13.0 or later.
Is CVE-2026-77407 being exploited?
There is no known exploitation of CVE-2026-77407 in the wild and no public exploit code.
Sources
Also known as AZL-103194, AZL-103278, CLEANSTART-2026-CK95490, CLEANSTART-2026-JZ39713, CLEANSTART-2026-LD19484, DEBIAN-CVE-2026-77407 and 41 more.