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Investigate Iframe Script Sandboxing #131

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harlan-zw opened this issue Jul 6, 2024 · 0 comments
Open

Investigate Iframe Script Sandboxing #131

harlan-zw opened this issue Jul 6, 2024 · 0 comments

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@harlan-zw
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harlan-zw commented Jul 6, 2024 •
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Context: https://web.dev/articles/sandboxed-iframes

We can have scripts load from a separate endpoint inside an iframe, allowing us to easily restrict their behaviour. This solves the security concern of using third-party scripts if the remote script is compromised, however it would only make sense for a subset of scripts.

<iframe sandbox="allow-scripts" src="/__scripts/my-script.html"></iframe>

/__scripts/my-script.html

<html>
   <script src="https://example.com/my-script.js"></script>
</html>

Twitter example

<iframe sandbox="allow-same-origin allow-scripts allow-popups allow-forms"
    src="https://platform.twitter.com/widgets/tweet_button.html"
    style="border: 0; width:130px; height:20px;"></iframe>
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@harlan-zw