Preliminary research

My Credentials, Please: Detecting Filesystem Capability Laundering in MCP Servers at Scale

Zeqian Huang, Mingyue Tang, Aonan Guan, Qiming Sun and Pengzhou He · arXiv · 15 October 2026

AI-collected research leads through 3 November 2026, including a November–October–September missed-article review and a targeted multilingual search alongside earlier community-source sweeps. Unranked, incomplete, not community-vetted, and subject to change.

Audits local MCP tools by inferring per-tool filesystem scope, planting out-of-scope fixtures, and comparing malicious and benign calls with and without containment. Separates screening signals from tested authorization violations.

Record

Researcher

Zeqian Huang, Mingyue Tang, Aonan Guan, Qiming Sun and Pengzhou He

Published by

arXiv

Date

15 October 2026

In the archive

• Collected in the 2026 preliminary research sweep

Tags

• mcp
• filesystem
• path-traversal
• sandbox
• methodology
• owasp-a01-2021

This page is the archive's own catalogue record. The research is the work of Zeqian Huang, Mingyue Tang, Aonan Guan, Qiming Sun and Pengzhou He, first published at the original source. Preserved copies are kept so the citation survives its host.