MCP Deeplinks

Developer Alert: “CursorJack” Technique Weaponizes Deeplinks to Hijack Cursor IDE

Developer Alert: “CursorJack” Technique Weaponizes Deeplinks to Hijack Cursor IDE

Do Son March 20, 2026

Proofpoint details 'CursorJack', a novel exploit using malicious MCP deeplinks in the Cursor AI editor to execute arbitrary code on developer machines.

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