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The Model Context Protocol (MCP) is emerging as a standard interface through which large language model (LLM) agents discover and invoke external tools. However, existing MCP evaluations fall short along three key axes: realistic multi-step…

The Model Context Protocol (MCP) has emerged as a standard for connecting large language models (LLMs) with external tools. However, this MCP ecosystem introduces new security risks across hosts, servers, and registries. In this paper, we…

Cryptography and Security · Computer Science 2026-04-29 Xiaofan Li , Xing Gao

The Model Context Protocol (MCP) is an emerging standard designed to enable seamless interaction between Large Language Model (LLM) applications and external tools or resources. Within a short period, thousands of MCP services have been…

Cryptography and Security · Computer Science 2025-09-16 Hao Song , Yiming Shen , Wenxuan Luo , Leixin Guo , Ting Chen , Jiashui Wang , Beibei Li , Xiaosong Zhang , Jiachi Chen

The Model Context Protocol (MCP) has emerged as a de facto standard for integrating Large Language Models with external tools, yet no formal security analysis of the protocol specification exists. We present the first rigorous security…

Cryptography and Security · Computer Science 2026-01-27 Narek Maloyan , Dmitry Namiot

The Model Context Protocol (MCP) standardizes how large language model (LLM) agents discover, describe, and call external tools. While MCP unlocks broad interoperability, it also enlarges the attack surface by making tools first-class,…

Cryptography and Security · Computer Science 2026-03-25 Dongsen Zhang , Zekun Li , Xu Luo , Xuannan Liu , Peipei Li , Wenjun Xu

Large language models (LLMs) are evolving into agentic systems that reason, plan, and operate external tools. The Model Context Protocol (MCP) is a key enabler of this transition, offering a standardized interface for connecting LLMs with…

Computation and Language · Computer Science 2026-03-06 Xuanjun Zong , Zhiqi Shen , Lei Wang , Yunshi Lan , Chao Yang

Model Context Protocol (MCP) have quickly become the interface layer between LLM agents and external tools, yet they also introduce unsafe data flows that existing analyzers handle poorly. Vulnerabilities manifest in two directions:…

Software Engineering · Computer Science 2026-05-11 Xinyi Hou , Yanjie Zhao , Haoyu Wang

Although Foundation Models (FMs), such as GPT-4, are increasingly used in domains like finance and software engineering, reliance on textual interfaces limits these models' real-world interaction. To address this, FM providers introduced a…

Software Engineering · Computer Science 2026-04-14 Mohammed Mehedi Hasan , Hao Li , Emad Fallahzadeh , Gopi Krishnan Rajbahadur , Bram Adams , Ahmed E. Hassan

To reduce development overhead and enable seamless integration between potential components comprising any given generative AI application, the Model Context Protocol (MCP) (Anthropic, 2024) has recently been released and subsequently…

Cryptography and Security · Computer Science 2025-04-14 Brandon Radosevich , John Halloran

Model Context Protocol (MCP) servers enable AI applications to connect to external systems in a plug-and-play manner, but their rapid proliferation also introduces severe security risks. Unlike mature software ecosystems with rigorous…

Cryptography and Security · Computer Science 2025-09-30 Weibo Zhao , Jiahao Liu , Bonan Ruan , Shaofei Li , Zhenkai Liang

Model Context Protocol (MCP) has emerged as a standard interface for connecting LLM agents to external tools. Because MCP servers expose privileged operations such as shell execution, network access, and file-system manipulation to…

Cryptography and Security · Computer Science 2026-05-21 Pengyu Sun , Qishu Jin , Enhao Huang , Zifeng Kang , Xin Liu , Dakun Shen , Song Li

The Model Context Protocol (MCP) has rapidly emerged as a universal standard for connecting AI assistants to external tools and data sources. While MCP simplifies integration between AI applications and various services, it introduces…

Cryptography and Security · Computer Science 2026-03-25 Charoes Huang , Xin Huang , Ngoc Phu Tran , Amin Milani Fard

Large Language Models (LLMs) demonstrate strong capabilities in solving complex tasks when integrated with external tools. The Model Context Protocol (MCP) has become a standard interface for enabling such tool-based interactions. However,…

Cryptography and Security · Computer Science 2026-01-23 Jiayi Fu , Yuansen Zhang , Yinggui Wang

The Model Context Protocol (MCP) has emerged as a universal standard that enables AI agents to seamlessly connect with external tools, significantly enhancing their functionality. However, while MCP brings notable benefits, it also…

Cryptography and Security · Computer Science 2026-05-26 Yongjian Guo , Puzhuo Liu , Wanlun Ma , Zehang Deng , Xiaogang Zhu , Peng Di , Xi Xiao , Sheng Wen

The Model Context Protocol (MCP) is a new and emerging technology that extends the functionality of large language models, improving workflows but also exposing users to a new attack surface. Several studies have highlighted related…

Cryptography and Security · Computer Science 2026-04-14 Tobias Mattsson , Samuel Nyberg , Anton Borg , Ricardo Britto

By providing a standardized interface for LLM agents to interact with external tools, the Model Context Protocol (MCP) is quickly becoming a cornerstone of the modern autonomous agent ecosystem. However, it creates novel attack surfaces due…

Cryptography and Security · Computer Science 2025-08-22 Zhiqiang Wang , Yichao Gao , Yanting Wang , Suyuan Liu , Haifeng Sun , Haoran Cheng , Guanquan Shi , Haohua Du , Xiangyang Li

The Model Context Protocol (MCP) replaces static, developer-controlled API integrations with more dynamic, user-driven agent systems, which also introduces new security risks. As MCP adoption grows across community servers and major…

Cryptography and Security · Computer Science 2025-11-27 Herman Errico , Jiquan Ngiam , Shanita Sojan

The Model Context Protocol (MCP) has emerged as a standardized interface enabling seamless integration between Large Language Models (LLMs) and external data sources and tools. While MCP significantly reduces development complexity and…

Cryptography and Security · Computer Science 2025-10-29 Bin Wang , Zexin Liu , Hao Yu , Ao Yang , Yenan Huang , Jing Guo , Huangsheng Cheng , Hui Li , Huiyu Wu

The Model Context Protocol (MCP) defines a schema bound execution model for agent-tool interaction, enabling modular computer vision workflows without retraining. To our knowledge, this is the first protocol level, deployment scale audit of…

Cryptography and Security · Computer Science 2025-09-30 Aditi Tiwari , Akshit Bhalla , Darshan Prasad

The rapid adoption of foundation models has significantly expanded the capabilities of software systems, enabling them to perform complex language, reasoning, and interaction tasks that were previously difficult to automate. However, this…

Software Engineering · Computer Science 2026-03-09 Mina Taraghi , Mohammad Mehdi Morovati , Foutse Khomh
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