Can't login invalid password /admin 403 forbidden

I am trying to login to the FreePBX web gui and I am getting invalid password, even though the password is correct. I also tried to browse to and I got 403 forbidden. Any ideas? This has happened to two of my machines on CentOS.

Thank you, that appeared to be the issue. Apparently I didn’t update in time. I ran the security check, then reset the password.