MCP-38: A Comprehensive Threat Taxonomy for Model Context Protocol Systems (v1.0)
The Model Context Protocol (MCP) introduces a structurally distinct attack surface that existing threat frameworks, designed for traditional software systems or generic LLM deployments, do not adequately cover. This paper presents MCP-38, a protocol-specific threat taxonomy consisting of 38 threat categories (MCP-01 through MCP-38). The taxonomy was derived through a systematic four-phase methodology: protocol decomposition, multi-framework cross-mapping, real-world incident synthesis, and remediation-surface categorization. Each category is mapped to STRIDE, OWASP Top 10 for LLM Applications (2025, LLM01--LLM10), and the OWASP Top 10 for Agentic Applications (2026, ASI01--ASI10). MCP-38 ...
| Authors | Yi Ting Shen, Kentaroh Toyoda, Alex Leung |
|---|---|
| Primary category | cs.CR |
| Published | 18 March 2026 |
| Last updated at source | 18 March 2026 |
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