Claude Code finds all 5 planted vulnerabilities in 8 minutes
A researcher tested Cloudflare’s security-audit-skill for Claude Code by planting five vulnerabilities in an 87-line Node.js app. The AI agent flagged all five as candidates in 7 minutes and 51 seconds—though none were marked as confirmed due to the lack of an isolated execution environment on the user’s Windows machine. The skill, which operates in three modes (quick, standard, deep), uses a…
Key points
- Claude Code’s *security-audit-skill* detected all 5 planted vulnerabilities in 8 minutes, with zero false positives
- Skill requires Docker/WSL for full verification—Windows Home users cannot exploit vulnerabilities due to missing sandboxing
- Cloudflare’s tool flags candidates but marks them *needs-validation* until manual or automated exploitation confirms risks
[Verification] I had Claude Code look for 5 intentionally planted vulnerabilities, and it found all of them in 8 minutes | 15 Trending AI Agent Tools
note.com · 28 October 2026
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