ChatGPT data leak risks arise when attackers exploit Model Context Protocol (MCP) integrations to trick users into approving actions, allowing data exfiltration from Gmail, calendars and cloud storage; immediate protection requires limiting tool access, verifying invites, and disabling broad agent permissions.
Primary risk: malicious calendar invite jailbreaks can trigger data exfiltration.
Mitigation: restrict MCP tool permissions and require manual confirmation for each action.
Impact data: proof-of-concept shows full inbox and calendar access is possible once consented.
ChatGPT data leak warning: learn the risks and protect your accounts—check permissions and disable unwanted integrations now.
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What is the ChatGPT data leak warning?
ChatGPT data leak warning refers to a demonstrated vulnerability where MCP (Model Context Protocol) integrations allow malicious inputs—such as crafted calendar invites—to trick an AI agent into accessing and exporting private data. The proof-of-concept shows user consent can be abused to read emails, calendar events and cloud files.
How did the calendar invite jailbreak work?
Security researcher Eito Miyamura reported that an attacker can send a calendar invite containing a “jailbreak” prompt. If the recipient accepts, ChatGPT with MCP tool access may follow the malicious instruction to search emails and cloud files and forward results to an attacker-controlled address. The exploit relies on user approval and AI agents executing commands without contextual common-sense checks.
Why did Vitalik Buterin comment on this issue?
Vitalik Buterin criticized simple “AI governance” responses as naive and recommended an “info finance” model instead. He argued that open markets for model auditing and human-judged spot-checks would better surface security flaws than centralized governance. His proposal focuses on transparent incentives and community-driven validation.
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Yes. The demonstrated method embeds a jailbreak prompt in a calendar invitation. If a user accepts and the AI has integration permissions, the agent may execute the prompt and access connected data sources.
Immediately review and revoke unnecessary MCP/tool permissions, disable automatic approvals, and scrutinize calendar invites that contain unexpected instructions or attachments.
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