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Vulnerability in Anthropic's Claude Code Allows File Upload Exploit

Vulnerability in Anthropic's Claude Code Allows File Upload Exploit

First seen 17 Jan 2026, 05:01 UTC • •

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ThreatCluster AI
ThreatCluster •March 12, 2026 at 13:27 UTC

A security vulnerability in Anthropic's Claude code has been identified, enabling malicious actors to trick the AI into uploading sensitive files to their accounts. The flaw was discovered by PromptArmor and reported by researcher Adam Chester from the SlowMist team. This incident raises significant concerns about the security of AI systems handling sensitive data.

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