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in Phusion Passenger before 4.0.60 and 5.0.x before 5.0.22, when used in Apache integration mode or in standalone mode without a filtering proxy, allows remote attackers to spoof headers passed to applications by using an _ (underscore) character instead of a - (dash) character in an HTTP header, as demonstrated by an X_User header.","Type":"Description","Title":"CVE-2015-7519"},{"CveYear":"2015","CveId":"7519","Ordinal":"2","NoteData":"2016-01-08","Type":"Other","Title":"Published"},{"CveYear":"2015","CveId":"7519","Ordinal":"3","NoteData":"2018-06-28","Type":"Other","Title":"Modified"}]}}}