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Researchers broke the browsers built into VS Code, Cursor, Copilot, Codex and Claude Desktop

Forever Security found ways to escape the built-in browsers in five AI coding assistants — Cursor, GitHub Copilot, OpenAI's Codex, Microsoft's VS Code and Anthropic's Claude Desktop — letting a web page or local file reach the computer behind the browser. Cursor ran attacker code, Copilot displayed a fake address, and Codex, VS Code and Claude Desktop allowed a single local file to read the rest of the disk. Two of the vulnerabilities remain unpatched.

by read1 min views3 publishedOct 29, 2026

Forever Security found ways out of the built-in browsers in five AI coding assistants: Cursor, GitHub Copilot, OpenAI’s Codex, Microsoft’s VS Code and Anthropic’s Claude Desktop. In all five, a web page or a local file reached the computer behind the browser. Cursor ran attacker code, Copilot showed a fake address, and Codex, VS Code and Claude Desktop let a single local file read the rest of the disk. Two of those holes are still … More

The post Researchers broke the browsers built into VS Code, Cursor, Copilot, Codex and Claude Desktop appeared first on Help Net Security.

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