single login for two areas

i have a site designed in cf, now after all is said an done i have been asked to incoporate a private blog into the site, no big deal, but i also have to include a careers page (available/upcoming jobs) and a training schedule that users can register to attend, without the blog id just do it all in cf, done that before, but users need to register to see the courses and the job postings as well as the blog. from a time perspective it would be faster and easier for me to do the job postings and training registration in cf and incorporate them into the existing site and have the blog separate but they need to have one single log on to access the job postings, training registration and blog, is there a plugin or code block that will let me have users login to my cf app and get access to a wp blog

TIA