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AlienVault OTX Vulnerabilities

AlienVault OTX Malware

The MCP inspector is a developer tool for testing and debugging MCP servers. Versions of MCP Inspector below 0.14.1 are vulnerable to remote code execution due to lack of authentication between the Inspector client and proxy, allowing unauthenticated requests to launch MCP commands over stdio. Users should immediately upgrade to version 0.14.1 or later to address these vulnerabilities.

CVE-2025-49596 is a critical vulnerability affecting versions of the modelcontextprotocol (MCP) Inspector tool prior to 0.14.1. MCP Inspector is a developer tool designed for testing and debugging MCP servers. The vulnerability arises due to the absence of authentication mechanisms between the Inspector client and its proxy component. This lack of authentication allows unauthenticated remote attackers to send arbitrary requests to the MCP Inspector proxy, which then executes MCP commands over standard input/output (stdio). Consequently, this can lead to remote code execution (RCE) on the host running the MCP Inspector proxy. The vulnerability is classified under CWE-306, which refers to missing authentication for critical functions, indicating that a security control that should restrict access to sensitive operations is absent. The CVSS v4.0 score for this vulnerability is 9.4 (critical), reflecting its high impact and ease of exploitation. The attack vector is network-based (AV:N), requires no privileges (PR:N), and no user interaction (UI:P), but the vulnerability impacts confidentiality, integrity, and availability at a high level (VC:H, VI:H, VA:H). The scope is changed (S:CH), meaning the vulnerability affects components beyond the initially vulnerable component. No known exploits are currently reported in the wild, but the severity and nature of the flaw make it a significant risk, especially in development or staging environments where MCP Inspector is deployed. Immediate upgrading to version 0.14.1 or later is recommended to remediate the issue, as these versions introduce proper authentication controls between the client and proxy to prevent unauthorized command execution.

Detailed information about CVE-2025-49596: CWE-306: Missing Authentication for Critical Function in modelcontextprotocol inspector affecting modelcontextprotoco

CVE-2025-49596: CWE-306: Missing Authentication for Critical Function in modelcontextprotocol inspector - Live Threat Intelligence - Threat Radar | OffSeq.com

CVE-2025-49596: CWE-306: Missing Authentication for Critical Function in modelcontextprotocol inspector

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