Researcher Discloses Web-Based Hijack Chain Against Claude Code with up to 80% Success

Security researcher wunderwuzzi23 demonstrated a complete attack chain that hijacks Claude Code Opus 5 in Auto Mode via a website, achieving code execution and full system compromise with a 60-80% success rate, underscoring the importance of security invariants for AI coding agents.

2026-08-28 ~ 2026-08-29 · 4 related posts

• Vuln: Website Hijacks Claude Code Opus 5 for System Compromise — wunderwuzzi23 · 2026-08-28
• Researcher demos hijacking Claude Code for full system compromise — wunderwuzzi23 · 2026-08-28
• Researcher Breaks Claude Code Opus 5 Auto Mode with 80% Attack Success Rate — wunderwuzzi23 · 2026-08-28
• Attack chain hijacks Claude Code Opus 5 via website — yoavgo · 2026-08-29