unable to access files outside of site account

[lcdservices]

From within a site account I'm unable to access files outside of the account, and I can't find the WHM setting that manages that.
Here's the scenario:

account path: /home/mysite/
test file: /home/mysite/public_html/test.php
executable app: /usr/local/bin/myapp

In my test file I simply check for existence and executability:

<?php
$path = '/usr/local/bin/myapp';
echo file_exists($path);
echo is_executable($path);

Both checks fail. The file definitely exists and is definitely executable. I can run the file from the command line as root, but not as the mysite user.
I thought it might be an open_basedir issue, but that is not enabled on the account as far as I can see.

For reference, we're running:
Operating System: CloudLinux v7.9.0
Product: cPanel & WHM v104.0.7

 

[cPRex]

Hey there! This is normal, and in general, there is no way to work around this on a cPanel system. If users were allowed to traverse the entire filesystem, that would be a major security issue.