I've good news for you. The security issue you reported with this ticket is been fixed and you can download the latest Toolset Blocks/Views plugins from your account's Downloads page:
=> https://toolset.com/account/downloads/
You can download the latest version and manually replace with your existing Blocks/Views plugin after login to admin using the plugins page.
Please note that:
- if you are using Blocks then Download and install the Blocks plugin.
- If you are using Views then Download and install the Views plugin.