WordPress- Vulnerable Plugin: post-grid (version 2.3.24) Help

I received the following message from WordPress Jetpack Scan:
What did Jetpack find?

The plugin post-grid (version 2.3.24) has a known vulnerability. Post Grid and Gutenberg Blocks <= 2.3.19 - Unauthenticated Insecure Direct Object Reference

Learn more about this vulnerability↗

How to resolve or handle this detection?

Jetpack Scan cannot automatically fix this threat. We suggest that you resolve the threat manually: ensure that WordPress, your theme, and all of your plugins are up to date, and remove the offending code, theme, or plugin from your site.

https://wpscan.com/vulnerability/67135efd-9886-4edb-9a2e-dbf5292e03c0/

Please tell me how to proceed. I use this plugin for two main pages on my website.