This document outlines a checklist for protecting against Server-Side Request Forgery (SSRF) vulnerabilities in URL fetching tools, particularly within Machine Configuration Protocol (MCP) environments. It emphasizes that fetch servers act as network egress points and require robust security measures before requests are made. Key recommendations include parsing URLs, resolving DNS, classifying IP addresses, and by default denying access to sensitive targets like metadata services, loopback interfaces, and private networks. AI
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IMPACT Provides security best practices for AI agents and tools that interact with external resources.
RANK_REASON The item is a technical guide and checklist for implementing security controls against a specific type of vulnerability. [lever_c_demoted from research: ic=1 ai=1.0]