Access to OJS site from a WORDPRESS site

Hello, on OJS 3.3.x is there any way to allow a Wordpress user that has been validated on that Wordpress site to gain access to an OJS journal. If so, how is it accomplished please?

The users logging into that site come from many difference IPs. In the old days, I thought a referring URL access existed but I think that is gone. It would be nice to use a plugin like SAML Single Sign On – SSO Login – WordPress plugin | WordPress.org on Wordpress to securely access OJS.

Is this possible? thanks ! OJS 3.3.x