Black Duck by Synopsys allows three mechanisms to login: local accounts, SAML, and LDAP. When SAML is implemented, you are automatically redirected to SSO at every login attempt. This is great...except when SAML stops working and you're stuck with no access to the admin panel. Here's a quick trick to work around that!
Simply add /sso/login to your Black Duck instance's URL. For example: https://<FQDN>/sso/login. Instead of being redirected to SSO, you'll be directed to the normal, local user account login page. From here, you can login via your local admin credentials and fix your SAML config.