Author: cdhowie
Description:
The action=query&list=blocks API call used to accept bkusers with / in them for range blocks. Now they are rejected with:
<error code="bkparam_user" info="User name 162.84.178.166/31 is not valid"/>
Version: 1.13.x
Severity: major
URL: http://en.wikipedia.org/w/api.php?action=query&list=blocks&bkusers=162.84.178.166/31&format=xml