CVE Catalog

CVE-2026-18655

MediumCVSS 6.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.42%

36th percentile - higher than 36% of all known CVEs

Summary

Improper restriction of intended endpoints in the RabbitMQ broker connection tools of the Amazon MQ MCP Server before 2.0.24 allows a remote unauthenticated attacker (via prompt injection) to obtain Amazon MQ for RabbitMQ broker credentials or OAuth access tokens sent to a crafted endpoint controlled through a broker hostname introduced in the MCP client context.

Risk Assessment

An attacker can intercept sensitive credentials and access tokens, leading to unauthorized access to Amazon MQ for RabbitMQ services.

Recommendation

Upgrade Amazon MQ MCP Server to version 2.0.24 or later immediately.

Related vulnerabilities

Original NVD description (English source)

Improper restriction of intended endpoints in the RabbitMQ broker connection tools of the Amazon MQ MCP Server (awslabs.amazon-mq-mcp-server) before 2.0.24 may allow a remote unauthenticated actor (via prompt injection) to obtain Amazon MQ for RabbitMQ broker credentials or OAuth access tokens sent to a crafted endpoint controlled through a broker hostname introduced in the MCP client context. To remediate this issue, users should upgrade to version 2.0.24.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS