Description

An issue was discovered in mcp-neo4j 0.3.0 allowing attackers to obtain sensitive information or execute arbitrary commands via the SSE service. NOTE: the Supplier's position is that authentication is not mandatory for MCP servers, and the mcp-neo4j MCP server is only intended for use in a local environment where authentication realistically would not be needed. Also, the Supplier provides middleware to help isolate the MCP server from external access (if needed).

INFO

Published Date :

2025-09-10T00:00:00.000Z

Last Modified :

2025-09-16T12:59:07.639Z

Source :

mitre
AFFECTED PRODUCTS

The following products are affected by CVE-2025-56406 vulnerability.

Vendors Products
Neo4j
  • Neo4j
Neo4j-contrib
  • Mcp-neo4j
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-56406.

URL Resource
https://github.com/August829/CVEP/issues/1 cve-icon cve-icon
https://github.com/neo4j-contrib/mcp-neo4j/issues/124 cve-icon cve-icon
https://modelcontextprotocol.io/specification/2025-03-26/basic/authorization cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact