The VR-Frases (collect & share quotes) WordPress plugin through 3.0.1 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.
https://wpscan.com/vulnerability/511c6e7a-087f-41ef-9009-2525f332f8c6/