For reasons I don't fully understand, the current version (1.3.6) of the OWASP dependency-check plugin produces an essentially empty report on trunk (3.0.0). After some research, it appears that this plugin has undergone significant work in the latest version, 1.4.3. Upgrading to this version produces the expected full report.
The only gotcha is that a new-ish version of maven is required. I'm using 3.2.2; I know that 3.0.x fails with a strange error.
This plugin was introduced in