CVE-2026-77407
Description
A flaw was found in RabbitMQ amqp091-go, a Go client for AMQP 0.9.1. This vulnerability allows plaintext credentials to be exposed. After a successful PLAIN authentication handshake, the client retains passwords in an unencrypted format within its connection configuration. Local code with access to the connection object, such as logging or debugging tools, can access these sensitive credentials, leading to information disclosure. The credentials remain exposed for the entire duration of the connection.
Statement
This flaw has a Moderate impact because plaintext AMQP credentials can remain in an exported connection configuration after authentication. Logging, monitoring, debugging, or error-handling code that traverses the connection object could expose those credentials.
Mitigation
Avoid logging or exporting complete AMQP connection objects and ensure diagnostic tooling redacts credentials. Update applications using amqp091-go when a fixed version is available.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.5 | N/A | N/A |
| Attack Vector | Local | N/A | N/A |
| Attack Complexity | Low | N/A | N/A |
| Privileges Required | Low | N/A | N/A |
| User Interaction | None | N/A | N/A |
| Scope | Unchanged | N/A | N/A |
| Confidentiality | High | N/A | N/A |
| Integrity Impact | None | N/A | N/A |
| Availability Impact | None | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Understanding the Weakness (CWE)
Access Control
Technical Impact: Gain Privileges or Assume Identity
Storing a plaintext password in a configuration file allows anyone who can read the file to access the password-protected resource. In some contexts, even storage of a plaintext password in memory is considered a security risk if the password is not cleared immediately after it is used.
Frequently Asked Questions
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