CVE-2026-18655

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.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://aws.amazon.com/security/security-bulletins/2026-070-aws/
https://github.com/awslabs/mcp/security/advisories/GHSA-xwj6-8x5h-hjp6
https://pypi.org/project/awslabs.amazon-mq-mcp-server/2.0.24/

Configurations

No configuration.

History

03 Aug 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-08-03 20:17

Updated : 2026-08-04 14:48

NVD link : CVE-2026-18655

Mitre link : CVE-2026-18655

CVE.ORG link : CVE-2026-18655

JSON object : View

Products Affected

No product.

CWE

CWE-923

Improper Restriction of Communication Channel to Intended Endpoints

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