Will OAuth Save MCP? A Look at Security in Model Context Protocols

Anthropic's Model Context Protocol (MCP) offers a simple way to integrate models, tools, and APIs, but its security is a concern. This article explores whether using OAuth as an identity layer for MCP is sufficient. While OAuth provides tokens, identifying clients and accessed resources, it doesn't solve all security problems, such as strong authentication, preventing credential theft, device identification, attribute-based access control, etc. The author argues that relying solely on OAuth is insufficient to address the new security risks posed by MCP. Infosec teams need to delve deeper into identity proxies and access policies to address the internal and external attack surfaces introduced by MCP.