GS Insever Portfolio <= 1.4.5 - Missing Authorization to Authenticated (Subscriber+) CSS Injection

The GS Insever Portfolio plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the save_settings() function in all versions up to, and including, 1.4.5. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update the plugin's CSS settings.