Liran Tal • 10/3/2025

The Cursor Agentic Jira MCP Attack Explained with Toxic Flow Analysis

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This article details a security advisory about a '0-click' attack targeting developers using the Cursor IDE integrated with Jira via the Model Context Protocol (MCP). It explains how attackers exploited 'toxic flows' in MCP by embedding malicious prompts in Jira tickets, allowing them to potentially steal JWT tokens and execute arbitrary code on a developer's machine through the AI-assisted workflow.

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#security #ide #Cursor
The Cursor Agentic Jira MCP Attack Explained with Toxic Flow Analysis

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