CVE-2025-56406

State: Published
Severity: 7.5 High
Published: Sep 10, 2025
Updated: Sep 16, 2025
Reserved: Aug 16, 2025

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).

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	CISA-ADP

Weaknesses

CWE-284 Improper Access Control
CWE-77 Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Affected Products

Product	Versions
n/an/a	n/aAffected

References

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