The project has been getting a flood of private vulnerability reports, most of which are invalid, and a few of which should have just been normal bugs. This has essentially been a DoS attack on maintainer time, since we're unable to change them into normal bugs after assessment. We now have a libuv-security@googlegroups.com list instead to help redirect those seeking CVE fame. The hope is to redirect most people to actually use the issue list as it has always been intended to be used.