The WP-Lister Lite for Amazon WordPress plugin before 2.4.4 does not sanitize and escapes a parameter before outputting it back in the page, leading to a Reflected Cross-Site Scripting which can be used against high-privilege users such as admin.
https://wpscan.com/vulnerability/460a01e5-7ce5-4d49-b068-a93ea1fba0e3