Reference Library
The Model Will Be Fooled: A Builder's Guide to the 2026 OWASP LLM Top 10
OWASP checked its rankings against 6,639 real incidents, and the risk practitioners fear most doesn't even crack the top ten by the numbers.

The 2026 OWASP Top 10 for LLM Applications, published August 4, reordered around agents: Excessive Agency climbed to third, Unbounded Consumption rose four places, and Improper Output Handling fell five. Behind the moves is a methodology change with an awkward result, since practitioners rank prompt injection first while the raw incident record drops it out of the top ten entirely. This guide walks all ten entries with the mechanism, a production failure, and the controls that hold, separating defenses that merely reduce attack success from the architectural bounds that survive an adaptive attacker.





