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Attempt to fix https://forum.palemoon.org/viewtopic.php?f=3&t=33260

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ownedbywuigi 2026-03-29 21:45:49 +01:00
commit 6199242317
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7
dom/xhr/XMLHttpRequestMainThread.cpp
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@ -3543,6 +3543,13 @@ XMLHttpRequestMainThread::ShouldBlockAuthPrompt()
// Verify that it's ok to prompt for credentials here, per spec
// http://xhr.spec.whatwg.org/#the-send%28%29-method
// Privileged add-ons can still issue synchronous XHR from chrome context.
// Showing a blocking HTTP auth dialog in that path can deadlock the UI when
// extension code is already running inside a nested event loop.
if (mFlagSynchronous && IsSystemXHR()) {
return true;
}
if (mAuthorRequestHeaders.Has("authorization")) {
return true;
}