Super Productivity: Arbitrary OS Command Execution via IPC EXEC Handler with Persistent Whitelist

Super Productivity is an advanced todo list app with integrated timeboxing and time tracking capabilities. Prior to 18.13.0, the EXEC IPC handler in electron/ipc-handlers/exec.ts accepts a command string from the renderer through the IPC.EXEC channel and executes it with child_process.exec(). The electron/preload.ts bridge exposes window.ea.exec() to renderer code, including community plugins executed with new Function(), without requiring nodeExecution permission. A confirmation dialog protects only the first execution, its persistence checkbox is selected by default, and approved commands are stored in the ALLOWED_COMMANDS value in simpleSettings for silent later execution with the desktop account's privileges. This issue is fixed in version 18.13.0.