= phenomenon =
blogs.fedoraproject.org has currently been preemptively taken down due to known security issues in our current version of wordpress.
= recommendation =
Update wordpress-mu or find a hotfix for this and any other known issues.
The bug in question is http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=605603 (blog authors can perform SQL injection).
I've filed bugzilla bugs https://bugzilla.redhat.com/show_bug.cgi?id=664873 and https://bugzilla.redhat.com/show_bug.cgi?id=664886 to the wordpress-mu and wordpress packages.
This outage is now over, the db logs confirm that apart from our testing, the vulnerabilities were never exploited on our instance.
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3.6 — Documentation