doc: add notice about network.http.referer.XOriginPolicy = 2 breaking some login flows #553
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
e.g. sites using
signin.example.org
for the actual login flow, and passing referers towww.example.org
after login (and erroring when no referer is provided). Don't remember exactly which ones but it happened to me more than once. For this reason I have been running with this set to 1 for years. Same eTLD sites often belong to the same organization so there are other opportunities for tracking anyway, e.g simply through webserver logs.