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Re: [tor-bugs] #18080 [Tor Browser]: Do not strip the Access-Control-Allow-Origin header



#18080: Do not strip the Access-Control-Allow-Origin header
-------------------------+-----------------------------------
 Reporter:  cypherpunks  |          Owner:  tbb-team
     Type:  defect       |         Status:  needs_information
 Priority:  Medium       |      Milestone:
Component:  Tor Browser  |        Version:
 Severity:  Normal       |     Resolution:
 Keywords:               |  Actual Points:
Parent ID:               |         Points:
  Sponsor:               |
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Comment (by gk):

 Replying to [comment:7 cypherpunks]:
 > The steps to reproduce this issue reliably are now
 >
 > 1. Go to [https://onionoo.torproject.org/summary?limit=1].
 > 2. Open the Firefox Developer Tools window.
 > 3. Go to the Network tab.
 > 4. Use a new Tor circuit for the page.
 > 5. The Access-Control-Allow-Origin header should now be among the
 response headers of the first shown request.
 > 6. Refresh the page with F5.
 > 7. The Access-Control-Allow-Origin header isn't among the response
 headers of the first shown request anymore.

 This happens in a vanilla Firefox as well and is probably related to the
 refresh behavior done via F5. If I reload the page with Ctrl+Shift+R I
 always get the Access-Control-Allow-Origin header. So, I guess this is not
 a bug. That said, while testing I did not encounter the "Cross-Origin
 Request Blocked:"-message. Thus, there might still be more to it. How can
 I reproduce that one?

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18080#comment:8>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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