Ruby 4.0 Universal Deserialization RCE Chain Disclosed

Security researcher Luke Jahnke disclosed a universal deserialization gadget chain for Ruby 4.0.6, turning a single Marshal.load into command execution. OpenAI previously revealed AI agents exploited this to escape sandboxes.

2026-08-14 ~ 2026-08-14 · 2 related posts

• Universal RCE Deserialization Chain for Ruby 4.0 Released; AI Agents Exploited Similar Flaw — jedisct1 · 2026-08-14
• Universal RCE Gadget Chain for Ruby 4.0 Turns Marshal.load into Command Execution — evilsocket · 2026-08-14