Looking at the script, a double round with aes-256-cbc [0] is done, moreover the file is hidden among thousands of files.
Like others ciphers it is vulnerable at implementation level, that is a enough long key must be chosen. Maybe the script could be improved adding a passphrase check.
[0]https://github.com/nola-a/jump/blob/f907cffcb08fd96ea91cd7f3...