WordPress Wisem premium theme <= 1.26 - Unauthenticated Reflected Cross-Site Scripting (XSS) vulnerability

Unauthenticated Reflected Cross-Site Scripting XSS vulnerability discovered by m0ze in WordPress Wisem premium theme versions = 1.26. Solution 9 June 2021 - Theme removed from the Themeforest repository. Unfortunately, no information about the patched version is available...