MCP Security Notification: Tool Poisoning Attacks
(invariantlabs.ai)
Invariant has discovered a critical vulnerability in the Model Context Protocol (MCP) that allows for what we term Tool Poisoning Attacks. This vulnerability can lead to sensitive data exfiltration and unauthorized actions by AI models. We explain the attack vector, its implications, and mitigation strategies. We urge users to exercise caution when connecting to third-party MCP servers and to implement security measures to protect sensitive information.
Invariant has discovered a critical vulnerability in the Model Context Protocol (MCP) that allows for what we term Tool Poisoning Attacks. This vulnerability can lead to sensitive data exfiltration and unauthorized actions by AI models. We explain the attack vector, its implications, and mitigation strategies. We urge users to exercise caution when connecting to third-party MCP servers and to implement security measures to protect sensitive information.