Framelink Figma MCP Server before 0.6.3 allows an unauthenticated remote attacker to execute arbitrary operating system commands via a crafted HTTP POST request with shell metacharacters in input that is used by a fetchWithRetry curl command. The vulnerable endpoint fails to properly sanitize user-supplied input, enabling the attacker to inject malicious commands that are executed with the privileges of the MCP process. Exploitation requires network access to the MCP interface.
https://www.darkreading.com/vulnerabilities-threats/figma-mcp-server-agentic-ai-compromise
https://thehackernews.com/2025/10/severe-figma-mcp-vulnerability-lets.html