In PHP before 5.6.28 and 7.x before 7.0.13, incorrect handling of various URI components in the URL parser could be used by attackers to bypass hostname-specific URL checks, as demonstrated by evil.example.com:80#@good.example.com/ and evil.example.com:[email protected]/ inputs to the parse_url function (implemented in the php_url_parse_ex function in ext/standard/url.c).
https://security.netapp.com/advisory/ntap-20180112-0001/
https://bugs.php.net/bug.php?id=73192
http://www.securityfocus.com/bid/99552
http://php.net/ChangeLog-7.php
http://php.net/ChangeLog-5.php
http://openwall.com/lists/oss-security/2017/07/10/6
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=b061fa909de77085d3822a89ab901b934d0362c4