OWASP Top 10 for LLM applications

OWASP’s list of the most important security risks in applications built on language models, with a separate list for AI agents.

The OWASP GenAI project publishes it next to the classic web OWASP Top 10. It covers prompt injection, leaks of sensitive data and system prompts, insecure handling of model output, excessive agency, poisoned data and runaway costs, among others; a separate Top 10 for agentic applications covers risks such as tool misuse and agent identity. Security questionnaires and enterprise buyers increasingly ask how an AI feature addresses it.

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Related terms

OWASP Top 10: The OWASP Foundation’s list of the ten most critical web application security risks, updated every few years.
Prompt injection: Instructions hidden in data (a web page, an email, a file) that the model follows as if they came from you.
Excessive agency: An AI agent with more tools, permissions or autonomy than its task needs, so a mistake or an injected instruction can do real damage.

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