Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in WP Shuffle Subscribe to Unlock Lite allows PHP Local File Inclusion. This issue affects Subscribe to Unlock Lite: from n/a through 1.3.0.
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.