Just in case anyone fails to grasp the potential security risk of this -- on Windows, the main platform Steam is used on, STEAM BYPASSES UAC BY DESIGN (using the Steam Client Service).
Let that sink in for a second.
This exploit allowed anyone with Steam developer access to place ANY Javascript on a Steam announcement, which means it will automatically be on Steam's front page in the 'Recently Updated' section, and any script contained on that page will be executed by the built-in Steam browser with elevated user access.
Let that sink in for a second.
This exploit allowed anyone with Steam developer access to place ANY Javascript on a Steam announcement, which means it will automatically be on Steam's front page in the 'Recently Updated' section, and any script contained on that page will be executed by the built-in Steam browser with elevated user access.