Your AI Agent Is One Bad URL Away From Being Compromised

Here is the security model baked into most AI agent frameworks: [Agent decides to fetch URL] → [Framework fetches it] → [Content lands in context] No validation. No trust check. The URL arrives, the framework fetches it, the content enters the model's context window. That is fine for s. It is a problem in production the moment your agent accepts user-submitted URLs, follows links from search results, or operates on behalf of users who cannot validate sources themselves. What Can Go Wrong Prompt injection via a domain you fetch.