OWASP Top 10 for LLM Applications

The security risks for LLM applications have changed as the applications themselves have become more capable. A model may now retrieve internal data, call tools, generate code, or take actions in other systems, giving attackers more ways to influence what the application does.

The 2026 edition of the OWASP Top 10 for LLM Applications reflects how these applications are being built today and updates the risks teams need to consider when designing and developing them.

What moved since 2025

The 2026 list still covers 10 risk areas, but the ranking has changed since 2025. Several categories have been expanded, and one has been renamed, to account for newer attack patterns and how LLM applications are being built. OWASP identifies three common causes:

• Excessive functionality: An AI assistant that only needs to read documents but can also modify or delete them.

• Excessive permissions: A tool that needs read access to a database but automatically receives write access.

• Excessive autonomy: A high-impact action that the model can take without an independent authorization check or user approval. Book a demo to see SecureFlag in action.