Why it matters
Old versions of popular libraries have well-known holes that attackers try automatically. Updating is usually a one-line change.
How to check it yourself
Search your page source for script tags with version numbers in them, such as jquery-1.12 or bootstrap@3. Anything several major versions old has publicly known holes.
What the fix involves
Upgrade to the current major version and fix what breaks, or remove the library and use the browser's built-in equivalents if you only need a few functions.
How vibeliq checks it
We load your page the way a visitor's browser would, read what your server sends back, and look at a short list of well-known addresses on your site. If this turns up, your report explains it in plain English and gives you a prompt, written for Claude Code, Cursor, Lovable or whatever built your site, that fixes it in your actual codebase.