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WordPress wp-admin blank iframe more details fix solution

WordPress wp-admin blank iframe more details fix solution

If like me you run a WordPress site you may have come across an issue where going to wp-admin/plugin-install.php and clicked on ‘More Details’ results in a blank iframe in the middle of the screen.

The issue is caused by XSS (cross site scripting) protection and is fixable.

You need to add the header
X-Frame-Options SAMEORIGIN

In nginx the change should be added in snippets/ssl-params.conf

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