Every version of Grip will receive security patches if anything is discovered by either the core team or the open-source contributors of the Grip framework.
If you will discover a vulnerability please open an issue to notify the core team about the security hole, provide a POC with which the core team members will be able to identify, debug and patch the flaw.
As a token of graditude you will be listed on the README.md page in the bug hunters section, thank you for your time.