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Power Platform Community / Forums / Power Apps / PowerApp WebPlayer SDK...
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PowerApp WebPlayer SDK vulnerability and correct usage

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Posted on by Microsoft Employee

Hello,

 

We had a previous issue with the PowerApp SDK on this thread postMessage with star origin issue - Power Platform Community (microsoft.com).

We are using the PowerApp SDK from https://apps.powerapps.com/apphost/clientsdk?version=1

We received a complain about a vulnerability regarding two PostMessage API `message` event listeners that are registered. Both event listeners validate the origin of received messages using a whitelist and a RegEx as a fallback.

The validation RegEx will accept any URL that begins with `https://app.powerapps.com` does not do sufficient checks to ensure its not exploited for unauthorized usage.

Is there a team or a point of contact we can contact about the PowerApp SDK? Is there any updated version provided in an npm package or similar that we can use?

 

Thanks

Guilherme

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