The Travelpayouts: All Travel Brands in One Place WordPress plugin before 1.1.14 does not sanitise and escape a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which could be used against high privilege users such as admin
The Travelpayouts: All Travel Brands in One Place WordPress plugin before 1.1.13 does not have CSRF check in place when importing settings from the v1, which could allow attackers to make a logged in admin update some settings via a CSRF attack
The Travelpayouts: All Travel Brands in One Place WordPress plugin through 1.1.15 is vulnerable to Open Redirect due to insufficient validation on the travelpayouts_redirect variable. This makes it possible for unauthenticated attackers to redirect users to potentially malicious sites if they can successfully trick them into performing an action.