The FlatPM WordPress plugin before 3.0.13 does not sanitise and escape some parameters before outputting them back in pages, leading to Reflected Cross-Site Scripting which could be used against high privilege users such as adminCreditscydaveWPScanReferenceshttps://wpscan.com/vulnerability/ab68381f-c4b8-4945-a6a5-1d4d6473b73a
