CVE-2026-18655
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
ProductAws Amazon-mq-mcp-server
PublishedAug 3, 2026
First seenAug 3, 2026
Weakness typeCWE-923CWE-923
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| AWS amazon-mq-mcp-server | v ≤ 2.0.23 | — |
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