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e3feb63e33
`wp-login.php` uses `wp_safe_redirect()` for all redirects, even those that do not involve unsafe data from the request or referer. When a user of a subdomain site attempts to login to a network site they do not have access to, the host in the redirect URL is treated as unsafe by `wp_safe_redirect()` as it has no immediate awareness as to which hosts are valid on the network. On a subdirectoy network, everything works as expected because the host is the same. In this specific block of `wp-login.php`, all URLs are generated by WordPress and we can use `wp_redirect()` to handle the redirects. Users authenticating via other network sites will now be redirected properly. Hosts passed via the `redirect_to` query var will continue to be handled by `wp_safe_redirect()`. Fixes #30598. git-svn-id: https://develop.svn.wordpress.org/trunk@36867 602fd350-edb4-49c9-b593-d223f7449a82