SSL Zen <= 4.5.3 - Unauthenticated Private Keys Access

Description The plugin only relies on the use of .htaccess to prevent visitors from accessing the site’s generated private keys, which allows an attacker to read them if the site runs on a server who doesn’t support .htaccess files, like NGINX.

PoC

Install the plugin on a server that doesn’t support .htaccess (e.g. NGINX), generate keys and browse to ./wp-content/plugins/ssl-zen/ssl_zen/keys.