Prompt injection in LLM features in Vercel
highUpdated Oct 12, 2026
No platform flag turns prompt injection off. Limits on the function's duration stop a runaway loop.
Fix for Vercel
No platform flag turns prompt injection off. Limits on the function's duration stop a runaway loop. They do not stop a single unauthorized refund.
The five-minute check, the other platforms, and the agent prompt are on the full guide. More Vercel fixes are on the Vercel page.