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ATR-2026-00100highTool Poisoningexperimental

Consent Bypass via Hidden LLM Instructions in Tool Descriptions

Detects tool descriptions that embed instructions directing the LLM to automatically forward data to other tools or external endpoints without user confirmation. These instructions bypass normal consent workflows by telling the LLM to "always pass results directly" or that data "should be sent without user confirmation", enabling unauthorized data exfiltration chains.

Severity
high
Category
Tool Poisoning
Scan Target
mcp
Author
ATR Community

Response Actions

alertsnapshot

References

OWASP Agentic
ASI02:2026 - Tool Misuse and ExploitationASI04:2026 - Insufficient User Consent
OWASP LLM
LLM01:2025 - Prompt InjectionLLM05:2025 - Improper Output Handling