CVE-2026-77404 RabbitMQ amqp091-go: Connection Configuration Overwrite via Unsanitized TLS Path Parameter Injection
Attackers can inject delimiters into TLS paths to overwrite connection options, potentially selecting unintended cryptographic assets or corrupting configuration.
- 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-2026-77404?
CVE-2026-77404 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, URI.String in uri.go concatenates CertFile, KeyFile, CACertFile, and ServerName values directly into an AMQPS query string instead of encoding them as URL query parameters with url.Values. If an application accepts a TLS asset path containing ampersand or equals delimiters and later reparses the serialized URI with ParseURI, the embedded delimiters can create or overwrite connection options, including paths to TLS certificate, key, or CA files. This can corrupt connection configuration or select unintended local cryptographic assets. This issue is fixed in version 1.13.0.
Weakness: CWE-116
Which versions are affected by CVE-2026-77404?
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-2026-77404?
Upgrade github.com/rabbitmq/amqp091-go to 1.13.0 or later.
Is CVE-2026-77404 being exploited?
There is no known exploitation of CVE-2026-77404 in the wild and no public exploit code.
Sources
Also known as CLEANSTART-2026-OF14206, CLEANSTART-2026-PW36869, CLEANSTART-2026-TU13335, DEBIAN-CVE-2026-77404, ECHO-b336-8e7c-32ba, GHSA-465g-fh3v-9jw4 and 39 more.