What’s Vulnerable › Vulnerabilities

CVE-2026-77404: RabbitMQ amqp091-go: Connection Configuration Overwrite via Unsanitized TLS Path Parameter Injection

• Severity: high (CVSS 8.7 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-16 · updated 2026-09-23
• Weakness: CWE-116

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.

Affected products

• rabbitmq amqp091-go: before 1.13.0

References

• https://github.com/rabbitmq/amqp091-go/commit/743d488e46955fe7ffc55506fe2c401d01216783
• https://github.com/rabbitmq/amqp091-go/pull/352
• https://github.com/rabbitmq/amqp091-go/releases/tag/v1.13.0
• https://github.com/rabbitmq/amqp091-go/security/advisories/GHSA-465g-fh3v-9jw4

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