Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in Magazine3 WP Multilang allows PHP Local File Inclusion. This issue affects WP Multilang: from n/a through 2.4.19.
Solution:
The PHP application receives input from an upstream component, but it does not restrict or incorrectly restricts the input before its usage in "require," "include," or similar functions.