GSheetConnector For Gravity Forms <= 1.3.27 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Plugin Installation

The GSheetConnector For Gravity Forms plugin for WordPress is vulnerable to authorization bypass in versions less than, or equal to, 1.3.27. This is due to a missing capability check on the 'install_plugin' function. This makes it possible for authenticated attackers, with subscriber-level access and above to install plugins on the target site and potentially achieve arbitrary code execution on the server under certain conditions.