---
id: 1356
title: "Buttercup is now open-source!"
source_domain: blog.trailofbits.com
source_url: "https://blog.trailofbits.com/2025/08/08/buttercup-is-now-open-source/"
published_at: "2025-08-08 04:00"
tags: ["ai-security", "open-source", "vulnerability-discovery", "darpa", "trail-of-bits", "aixcc", "buttercup"]
phying_url: "https://phying.com/item/1356"
lang: en
---

# Buttercup is now open-source!

## Summary

After second place in DARPA's AIxCC, Trail of Bits open-sourced Buttercup, an AI system that finds and patches vulnerabilities via fuzzing, static analysis, and multi-agent patch generation.

## Intelligence Metadata

- **Sources:** blog.trailofbits.com
- **Published:** 2025-08-08 04:00
- **Original:** https://blog.trailofbits.com/2025/08/08/buttercup-is-now-open-source/
- **Phying News:** https://phying.com/item/1356