Analysis

MCPTox: A Benchmark for Tool Poisoning Attack on Real-World MCP Servers

Page published

Publication date unknown · First observed: 11 Nov 2026

Coverage timeline

discovered arxiv.org primary 11 Nov 2026neuraltrust.aiobserved

Single-source analysis — one report is available.

Why it matters

MCP tool metadata can redirect agents into unauthorized operations, making tool integrity, least privilege, and runtime enforcement important controls for defenders.

NeuralTrust’s MCP Security Best Practices Checklist outlines least privilege, pinned tool definitions, sandboxing, OAuth audience checks, human approval for risky actions, and runtime logging and enforcement. Supporting MCPTox research documents widespread agent susceptibility to malicious instructions embedded in tool metadata.