The changenote is talking about access from script. Script running in a page loa... | Hacker News

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bzbarsky on July 9, 2019 | parent | context | favorite | on: Firefox 68.0

The changenote is talking about access from script.

Script running in a page loaded from file:// will not be able to access the DOM or text of any other file:// URLs, other than the one it's running in.

kijin on July 9, 2019 [–]

That makes sense, because so much security nowadays depends on keeping origins separate. It's hard to tell whether any given file:// URL belongs in the same origin as another file:// URL. Better treat each file:// URL as its own origin.

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