Anthropic Claude Flaw Lets Attackers Steal Data Using AI’s Own API - WinBuzzer

Vulnerability in Anthropic's Claude AI

A critical vulnerability in Anthropic's Claude AI allows attackers to steal user data via a chained exploit that abuses the platform's own File API.

A security researcher exposed the flaw, which enables attackers to hijack Claude's Code Interpreter using hidden commands.

These commands trick the AI into using Anthropic's own File API to send sensitive data, like chat histories, directly to an attacker.

Anthropic initially dismissed the report on October 25 but later acknowledged a "process hiccup" on October 30.

Author's summary: Critical vulnerability in Claude AI allows data theft.

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WinBuzzer WinBuzzer — 2025-11-03