The Base64 Encoder/Decoder WordPress plugin through 0.9.2 does not have CSRF check in place when resetting its settings, which could allow attackers to make a logged in admin reset them via a CSRF attack
The Base64 Encoder/Decoder WordPress plugin through 0.9.2 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