Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| AWS | amazon-mq-mcp-server | ≤ 2.0.23 | — |
References
- https://pypi.org/project/awslabs.amazon-mq-mcp-server/2.0.24/ release-notes patch
- https://aws.amazon.com/security/security-bulletins/2026-070-aws/ vendor-advisory
- https://github.com/awslabs/mcp/security/advisories/GHSA-xwj6-8x5h-hjp6 release-notes