Authentication Bypass by Spoofing vulnerability in RafflePress Giveaways and Contests allows Functionality Bypass.This issue affects Giveaways and Contests: from n/a through 1.12.7.

The Giveaways and Contests by RafflePress WordPress plugin before 1.11.3 does not validate and escape some of its shortcode attributes before outputting them back in a page/post where the shortcode is embed, which could allow users with the contributor role and above to perform Stored Cross-Site Scripting attacks.