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OWASP Top 10 for LLM Applications

Author
OWASP GenAI Security Project
Added
4 October 2026
Original
https://genai.owasp.org/llm-top-10/

Summary

A community-maintained list of the most critical security risks for applications built on large language models, with descriptions, examples, and mitigations.

Key points

  • Prompt injection is ranked as the top risk.
  • Other entries include sensitive information disclosure, supply chain risks, data and model poisoning, improper output handling, excessive agency, and unbounded consumption.
  • Each risk comes with prevention guidance.

Why it matters

The standard checklist for threat-modelling an LLM application or agent.