
GuardFall: 10 of 11 Open-Source AI Coding Agents Fail a 30-Year-Old Shell Trick
Adversa AI’s GuardFall research shows that 10 of 11 popular open-source AI coding agents — including Aider, Cline, Goose, opencode, and OpenHands, collectively ~548,000 GitHub stars — can be tricked into running destructive shell commands their own safety filters were built to block, using decades-old bash tricks like quote splitting and $IFS expansion. Only Continue held up under testing.








