our client has a simple site based on Construct theme (1.3) made by some third party company few years ago. Our client no longer have contact with the company that made the webpage, but the site had some issues with security and it looks like this is somehow connected with the theme (logs suggest some activity around construct theme files ). One security resercher even sent us a link to an exploit (not sure if I should post this, but this is public on github, so it's not like a secret 0day on some darknet forum)  for this theme. Now, my questions:
- we have version 1.3, what's current version of the theme?
- is this a known issue? and is it fixed? I hope both are "YES"
- do we have to buy the theme again for this site? or is this somehow still supported?
 ie. wp-content/themes/construct/lib/functions/core.php