fix(user-activity-broadcaster): determine the correct origin to postMessage #874
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TheSharpieOne
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LauRoxx,
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owolfhu1
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Jul 16, 2025
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Previously this would change origin from "essentials" to "apps" assuming that all essentials applications are iframed into the apps domain. This is not always the case anymore as environments have migrated.
Really, this didn't validate the domain, any domain that contained "essentials" or "apps" could be used, including something like "essentials.malicious.com" (which would postMessage to "apps.malicious.com")
Also, not 100% sure why there was the case for the opposite of "apps" to "essentials" since the seems like it could never be the case.
With this change, it will now validate the iframe's parent domain before it uses it as the origin. This works for when essentials is iframed into apps as well as when essentials is iframed into essentials and any time this is iframed into an availity domain.