Vulnerability 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).
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://github.com/August829/CVEP/issues/1
- https://github.com/neo4j-contrib/mcp-neo4j/issues/124
- https://modelcontextprotocol.io/specification/2025-03-26/basic/authorization
FAQ
What is CVE-2025-56406?
CVE-2025-56406 is a vulnerability with a CVSS score of 7.5 (HIGH). 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...
How severe is CVE-2025-56406?
CVE-2025-56406 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2025-56406?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.