Is it possible to render a PHP frontend into a Vue node?

I have a legacy PHP app which I would like to slowly migrate to Vue. The PHP app renders a bunch of HTML and javascript files in quite a tangled fashion, i.e.

foo.js.php
...
<script src="mysite.com/some_js_file.js" />
...
const a = '<?=$variable_from_php?>';

so in the end, the browser obviously doesn't know how the js files are constructed, but can run them. What I'd like to do is from the outer layer Vue app, request the index page for a certain sub-section of the legacy app, and render that to a Vue node, as a micro-frontend of sorts. When I request each index, it will of course, contain a header with numerous other imports (scripts/styles) that that micro-frontend needs to function. So, two parts to this question: 1) what would be the best (or maybe least terrible) way to do this in Vue. Using v-html? iframe? (please say no iframes) And 2) will there be any showstopper security problems with this approach (since I'm basically saying fetch all the JS in the header and run it). Let me know if this question makes sense. Thanks!

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