CVE-2025-56406
HIGH EPSS 35.8%
Published Sep 10, 20259mo ago · Modified Jun 17, 20261w ago
7.5 CVSS 3.1
Published Sep 10, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago
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 Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity None
Availability None
Threat Intelligence
EPSS Exploit Probability
35.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 3
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor Information Exposure
CWE-284
CWE-77 Command Injection Injection
References 3
- github.com https://github.com/August829/CVEP/issues/1
- github.com https://github.com/neo4j-contrib/mcp-neo4j/issues/124
- modelcontextprotocol.io https://modelcontextprotocol.io/specification/2025-03-26/basic/authorization
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.