OpenRefine is a powerful free, open source tool for working with messy data. Prior to version 3.7.5, a remote code execution vulnerability allows any unauthenticated user to execute code on the server. Version 3.7.5 has a patch for this issue.
https://github.com/OpenRefine/OpenRefine/security/advisories/GHSA-p3r5-x3hr-gpg5
https://github.com/OpenRefine/OpenRefine/commit/693fde606d4b5b78b16391c29d110389eb605511