The most concerning part isn't the vulnerability itself, but Google classifying it as a "Known Issue" ineligible for rewards. It implies this is an architectural choice, not a bug.
They are effectively admitting that you can't have an "agentic" IDE that is both useful and safe. They prioritized the feature set (reading files + internet access) over the sandbox. We are basically repeating the "ActiveX" mistakes of the 90s, but this time with LLMs driving the execution.