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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-18655 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

Nist CVSS score does not match with CNA score
CNA:  AMZN
CVSS-B 7.1 HIGH
Vector:  CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://aws.amazon.com/security/security-bulletins/2026-070-aws/ AMZN
https://github.com/awslabs/mcp/security/advisories/GHSA-xwj6-8x5h-hjp6 AMZN
https://pypi.org/project/awslabs.amazon-mq-mcp-server/2.0.24/ AMZN

Weakness Enumeration

CWE-ID CWE Name Source
CWE-923 Improper Restriction of Communication Channel to Intended Endpoints AMZN  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-18655
NVD Published Date:
08/03/2026
NVD Last Modified:
08/04/2026
Source:
AMZN