Remediation Steps
Follow the steps below to remediate this finding on Joomla.
Edit the .htaccess file in the Joomla root directory and add:
<IfModule mod_headers.c> Header always set Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline'; object-src 'none';" </IfModule>Alternatively, install the SecurityHeaders extension and configure CSP from the extension settings.