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An issue was discovered in MariaDB MCP 0.1.0 allowing attackers to gain sensitive information via the SSE service as the SSE service lacks user validation.

CVE-2025-56404 is a vulnerability identified in MariaDB MCP version 0.1.0, specifically related to its SSE (Server-Sent Events) service. The core issue stems from the SSE service lacking proper user validation, which allows attackers to gain access to sensitive information. Server-Sent Events are a web technology enabling servers to push real-time updates to clients over HTTP connections. In this context, the SSE service in MariaDB MCP is expected to handle authenticated requests to deliver data streams securely. However, due to the absence of user validation, unauthorized actors can connect to the SSE endpoint and retrieve sensitive data that should otherwise be protected. Although the affected version is an early release (0.1.0), this vulnerability highlights a critical design flaw in access control mechanisms within the SSE implementation. No specific affected versions beyond 0.1.0 are listed, and no patches or fixes have been published yet. Additionally, there are no known exploits in the wild at this time. The lack of a CVSS score indicates that the vulnerability has not yet been fully assessed for severity, but the nature of unauthorized data disclosure through an unauthenticated channel is concerning. Since MariaDB MCP is a management and control platform for MariaDB databases, exposure of sensitive information via SSE could lead to leakage of database metadata, configuration details, or other confidential operational data, potentially aiding further attacks or reconnaissance.

Detailed information about CVE-2025-56404: n/a. Get real-time updates, technical details, and mitigation strategies.

CVE-2025-56404: n/a - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2025-56404: n/a

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