Affected script: "install-scripts:post-update-cmd"

The install script removes everything from the app/etc directory and then removes the directory itself, potentially erasing important configuration files. The script also executes a command from the 'vendor/bin/phpcs' directory with user-specified shell variables, which could potentially be exploited to achieve arbitrary code execution, depending on the inputs. These actions pose significant security concerns, as they could result in the deletion of important files and unauthorized access.