dev.to· Oct 16, 2026· by gabrielanhaia

Your Coding Agent Reads .env Without Asking. The Permission Prompt Guards the Wrong Door

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A Cursor agent found a Railway token in an unrelated file and deleted a volume in 9 seconds. Approval prompts gate actions. The read already got the key.
🎯 Vulnerability: Web Security Vulnerability
💡 Defense Fix: Implement strict input validation, contextual output encoding, and enforce least-privilege authorization controls.
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