csteipp added a subscriber: hoo.
csteipp added a comment.

In https://phabricator.wikimedia.org/T107602#1508326, @Smalyshev wrote:

> Aren't our tokens HTTP only?


Our session cookies are, but anti-csrf tokens are available via API call. So 
javascript running on a wikidata.org subdomain can edit on any other WMF wiki 
via CORS.

> If we allow content from *.wikidata.org to be injected to any wiki, then this 
> means test.wikidata.org is included too and any domain that is in 
> wikidata.org. Maybe we can set it to www.wikidata.org only? I'm not sure we 
> need other wikis to pull anything from test.wikidata.org, do we?


I know we edit www.wikidata.org from many WMF domains (and I believe 
test.wikidata.org from test.wikipedia.org, for... testing), so wikidata.org 
needs to allow CORS requests from all WMF domains. However, I don't know if we 
ever edit other WMF domains from wikidata.org via CORS, so we might be able to 
cut *.wikidata.org out of our CORS policy entirely. Maybe @hoo knows?


TASK DETAIL
  https://phabricator.wikimedia.org/T107602

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To: Joe, csteipp
Cc: hoo, GWicke, greg, Lydia_Pintscher, csteipp, jcrespo, Legoktm, gerritbot, 
Smalyshev, BBlack, Joe, daniel, RobLa-WMF, Aklapper, aude, JanZerebecki, 
JeroenDeDauw, MrStradivarius, waldyrious, Krenair, MBlissett, bd808, Laddo, 
Addshore, Matanya, jkroll, Wikidata-bugs, Jdouglas, RobH, Manybubbles, mark, 
faidon, fgiunchedi, Dzahn, chasemp, Malyacko, P.Copp



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